> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-docs-use-case-ia-overhaul.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Issue Shares

> Distribute tokenized shares to multiple approved holders in one B20 Asset batch.

export const AssetDemo = ({flow}) => {
  const sans = "'Base Sans','Inter Tight',Inter,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif";
  const mono = "'Base Mono','Roboto Mono',ui-monospace,'SF Mono',Menlo,Consolas,monospace";
  const C = {
    blue: "#0000ff",
    onBlue: "#ffffff",
    cerulean: "#3c8aff",
    ink: "#0a0b0d",
    body: "#32353d",
    sec: "#5b616e",
    sub: "#717886",
    border: "#dee1e7",
    panel: "#eef0f3",
    white: "#ffffff",
    success: "#66c800",
    lime: "#b6f569",
    error: "#fc401f",
    warn: "#ffd12f",
    blueSoft: "rgba(0,0,255,.06)",
    successSoft: "rgba(102,200,0,.12)",
    errorSoft: "rgba(252,64,31,.10)"
  };
  const dot = {
    Issuer: C.blue,
    Alice: "#66c800",
    Bob: "#ffd12f",
    Carol: "#fc401f"
  };
  const TOKEN = "EXM";
  const NETWORK = "Base Mainnet";
  const ok = (name, detail) => ({
    kind: "ok",
    name,
    detail: detail || ""
  });
  const err = (name, detail) => ({
    kind: "err",
    name,
    detail: detail || ""
  });
  const nfo = (name, detail) => ({
    kind: "info",
    name,
    detail: detail || ""
  });
  const fmt = n => String(n).replace(/\B(?=(\d{3})+(?!\d))/g, ",");
  const M = v => ({
    v,
    mono: true
  });
  const freshSim = () => ({
    balances: {},
    blocked: null,
    multiplier: 1,
    paused: false
  });
  const FLOWS = {
    create: {
      label: "Create",
      title: "Create a stock token",
      readout: false,
      erc20: "B20 supplies a shared Asset standard instead of a custom token contract.",
      steps: [{
        stage: "Create",
        action: "Create EXM",
        text: "Define Example Corp Class A with six-decimal share precision.",
        summary: [["Operation", "Create token"], ["Symbol", TOKEN], ["Standard", "B20 Asset"], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("createB20", "ASSET · EXM · 0xB200…e7a1"), nfo("decimals()", "6")],
          caption: "The factory creates an ERC-20-compatible B20 Asset token."
        })
      }, {
        stage: "Controls",
        action: "Apply controls",
        text: "Set issuer roles and a technical issuance ceiling in the same transaction.",
        summary: [["Operation", "Apply controls"], ["Roles", "MINT, OPERATOR"], ["Supply cap", M("1,000,000 EXM")], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("grantRole", "MINT_ROLE, OPERATOR_ROLE → Issuer"), ok("SupplyCapUpdated", "1,000,000 EXM")],
          caption: "The ceiling limits token supply; it does not define legally authorized shares."
        })
      }, {
        stage: "Identify",
        action: "Add identifier",
        text: "Attach an issuer-defined identifier for integrations and records.",
        summary: [["Operation", "Set metadata"], ["Field", M("security-id")], ["Value", M('"EXAMPLE-CLASS-A"')], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("ExtraMetadataUpdated", 'security-id → "EXAMPLE-CLASS-A"')],
          caption: "B20 stores the issuer-defined value without validating an external registry."
        })
      }]
    },
    issue: {
      label: "Issue",
      title: "Issue shares to approved holders",
      readout: true,
      erc20: "The Asset variant batches a cap-table distribution into one transaction.",
      steps: [{
        stage: "Approve",
        action: "Approve holders",
        text: "Alice and Bob are approved to hold Example Corp shares.",
        summary: [["Operation", "Update allowlist"], ["Approved", "Alice, Bob"], ["Symbol", TOKEN], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("updateAllowlist", "allow Alice, Bob")],
          caption: "The same holder policy can govern issuance and transfers."
        })
      }, {
        stage: "Issue",
        action: "Issue 1,000",
        text: "Distribute 600 shares to Alice and 400 to Bob.",
        summary: [["Operation", "Batch mint"], ["Recipients", "Alice, Bob"], ["Share amount", M("1,000 EXM")], ["Network", NETWORK]],
        run: s => {
          s.balances.Alice = 600;
          s.balances.Bob = 400;
          return {
            entries: [ok("batchMint", "2 recipients · 1,000 EXM"), ok("Transfer", "0x0 → Alice · 600"), ok("Transfer", "0x0 → Bob · 400")],
            caption: "One batch records the initial distribution."
          };
        }
      }]
    },
    restrict: {
      label: "Restrict",
      title: "Keep shares with eligible holders",
      readout: true,
      erc20: "The shared Policy Registry gates issuance and transfers without a custom hook.",
      steps: [{
        stage: "Policy",
        action: "Enable policy",
        text: "Approve Alice and Bob, then bind the policy to mint and transfer scopes.",
        summary: [["Operation", "Enable policy"], ["Policy", "#2 · ALLOWLIST"], ["Scopes", "MINT, TRANSFER"], ["Approved", "Alice, Bob"]],
        run: () => ({
          entries: [ok("PolicyCreated", "#2 · ALLOWLIST"), ok("PolicyUpdated", "MINT_RECEIVER, TRANSFER_SENDER, TRANSFER_RECEIVER → #2")],
          caption: "Accounts are denied until the policy admin approves them."
        })
      }, {
        stage: "Issue",
        action: "Issue 100",
        text: "Issue shares to approved holder Alice.",
        summary: [["Operation", "Mint"], ["Recipient", "Alice"], ["Share amount", M("100 EXM")], ["Network", NETWORK]],
        run: s => {
          s.balances.Alice = 100;
          return {
            entries: [ok("Transfer", "0x0 → Alice · 100 EXM")]
          };
        }
      }, {
        stage: "Enforce",
        action: "Try transfer",
        text: "Alice tries to transfer shares to unapproved holder Carol.",
        summary: [["Operation", "Transfer"], ["To", "Carol"], ["Policy", "Allowlist #2"], ["Status", "Denied"]],
        run: () => ({
          entries: [err("PolicyForbids", "TRANSFER_RECEIVER · Carol")],
          caption: "Carol cannot receive shares until the policy admin approves her."
        })
      }]
    },
    cancel: {
      label: "Cancel",
      title: "Cancel shares from a blocked holder",
      readout: true,
      erc20: "B20 exposes a dedicated burn path for a holder denied by the sender policy.",
      steps: [{
        stage: "Fund",
        action: "Set position",
        text: "Bob holds 100 EXM and is currently eligible.",
        summary: [["Operation", "Mint"], ["Holder", "Bob"], ["Share amount", M("100 EXM")]],
        run: s => {
          s.balances.Bob = 100;
          return {
            entries: [ok("Transfer", "0x0 → Bob · 100 EXM")]
          };
        }
      }, {
        stage: "Block",
        action: "Block Bob",
        text: "Remove Bob from the holder allowlist before cancellation.",
        summary: [["Operation", "Block holder"], ["Holder", "Bob"], ["Policy", "Allowlist"], ["Status", "Denied"]],
        run: s => {
          s.blocked = "Bob";
          return {
            entries: [ok("updateAllowlist", "remove Bob"), err("PolicyForbids", "TRANSFER_SENDER · Bob")],
            caption: "Bob is denied by the token's sender policy."
          };
        }
      }, {
        stage: "Cancel",
        action: "Cancel 100",
        text: "Cancel the blocked shares; they do not move to the issuer.",
        summary: [["Operation", "Burn blocked"], ["Holder", "Bob"], ["Share amount", M("100 EXM")]],
        run: s => {
          s.balances.Bob = 0;
          return {
            entries: [ok("burnBlocked", "Bob · 100 EXM"), ok("Transfer", "Bob → 0x0 · 100 EXM")],
            caption: "The shares are burned, reducing total supply."
          };
        }
      }]
    },
    dividend: {
      label: "Dividend",
      title: "Announce a stock dividend",
      readout: true,
      erc20: "B20 brackets the share distribution with an onchain description and URI.",
      steps: [{
        stage: "Record",
        action: "Load holders",
        text: "Alice holds 600 shares and Bob holds 400.",
        summary: [["Operation", "Record date"], ["Holders", "Alice, Bob"], ["Outstanding", M("1,000 EXM")]],
        run: s => {
          s.balances.Alice = 600;
          s.balances.Bob = 400;
          return {
            entries: [nfo("record date", "Alice 600 · Bob 400")],
            caption: "The example distributes a five-percent stock dividend."
          };
        }
      }, {
        stage: "Announce",
        action: "Announce & issue",
        text: "Publish the action details and distribute 30 shares to Alice and 20 to Bob.",
        summary: [["Operation", "Stock dividend"], ["Action id", M("2026-01")], ["Distributed", M("50 EXM")], ["Recipients", "Alice, Bob"]],
        run: s => {
          s.balances.Alice += 30;
          s.balances.Bob += 20;
          return {
            entries: [ok("Announcement", "id 2026-01 · stock dividend"), ok("batchMint", "Alice 30 · Bob 20"), ok("EndAnnouncement", "id 2026-01")],
            caption: "This issues additional shares; it does not pay a cash dividend."
          };
        }
      }]
    },
    split: {
      label: "Split",
      title: "Run a 2-for-1 stock split",
      readout: true,
      erc20: "The Asset multiplier changes displayed balances without migrating holders.",
      steps: [{
        stage: "Load",
        action: "Load balances",
        text: "Alice holds 100 raw shares and Bob holds 50.",
        summary: [["Operation", "Load balances"], ["Multiplier", M("1.0 WAD")], ["Holders", "Alice, Bob"]],
        run: s => {
          s.balances.Alice = 100;
          s.balances.Bob = 50;
          return {
            entries: [nfo("multiplier()", "1.0 WAD")],
            caption: "Raw balances and displayed balances currently match."
          };
        }
      }, {
        stage: "Split",
        action: "Run split",
        text: "Apply the board-approved 2-for-1 split.",
        summary: [["Operation", "2-for-1 split"], ["Multiplier", M("1.0 → 2.0 WAD")], ["Symbol", TOKEN], ["Network", NETWORK]],
        run: s => {
          s.multiplier = 2;
          return {
            entries: [ok("MultiplierUpdated", "1.0 → 2.0 WAD"), nfo("scaledBalanceOf(Alice)", "200 EXM")],
            caption: "Displayed balances double while raw balances remain unchanged."
          };
        }
      }]
    },
    pause: {
      label: "Pause",
      title: "Pause transfers without stopping issuance",
      readout: true,
      erc20: "B20 separates transfer, mint, and burn pause controls.",
      steps: [{
        stage: "Fund",
        action: "Load balance",
        text: "Alice holds 100 EXM before an incident begins.",
        summary: [["Operation", "Mint"], ["Holder", "Alice"], ["Share amount", M("100 EXM")]],
        run: s => {
          s.balances.Alice = 100;
          return {
            entries: [ok("Transfer", "0x0 → Alice · 100 EXM")]
          };
        }
      }, {
        stage: "Pause",
        action: "Pause transfers",
        text: "Pause transfers while the issuer investigates.",
        summary: [["Operation", "Pause"], ["Scope", "TRANSFER"], ["Symbol", TOKEN], ["Network", NETWORK]],
        run: s => {
          s.paused = true;
          return {
            entries: [ok("Paused", "TRANSFER")],
            caption: "Mint and burn remain available."
          };
        }
      }, {
        stage: "Enforce",
        action: "Try transfer",
        text: "Alice tries to transfer 10 shares to Bob.",
        summary: [["Operation", "Transfer"], ["Amount", M("10 EXM")], ["Scope", "TRANSFER (paused)"], ["Status", "Blocked"]],
        run: () => ({
          entries: [err("EnforcedPause", "TRANSFER")],
          caption: "The transfer is rejected by the paused feature."
        })
      }, {
        stage: "Issue",
        action: "Issue 25",
        text: "The issuer can still issue 25 shares to approved holder Bob.",
        summary: [["Operation", "Mint"], ["Recipient", "Bob"], ["Share amount", M("25 EXM")], ["Note", "Mint unpaused"]],
        run: s => {
          s.balances.Bob = 25;
          return {
            entries: [ok("Transfer", "0x0 → Bob · 25 EXM")],
            caption: "Granular pause leaves unpaused operations available."
          };
        }
      }]
    }
  };
  const order = ["create", "issue", "restrict", "cancel", "dividend", "split", "pause"];
  const pinned = flow ? FLOWS[flow] ? flow : order[0] : null;
  const [active, setActive] = useState(pinned || "create");
  const [sim, setSim] = useState(freshSim);
  const [results, setResults] = useState([]);
  const f = FLOWS[active] || FLOWS.create;
  const stepIndex = results.length;
  const done = stepIndex >= f.steps.length;
  const cur = done ? f.steps[f.steps.length - 1] : f.steps[stepIndex];
  const select = k => {
    setActive(k);
    setSim(freshSim());
    setResults([]);
  };
  const reset = () => {
    setSim(freshSim());
    setResults([]);
  };
  const runStep = () => {
    if (done) return;
    const s = {
      balances: {
        ...sim.balances
      },
      blocked: sim.blocked,
      multiplier: sim.multiplier,
      paused: sim.paused
    };
    const out = f.steps[stepIndex].run(s) || ({
      entries: []
    });
    setSim(s);
    setResults(r => [...r, out]);
  };
  const back = () => {
    const n = results.length - 1;
    if (n < 0) return;
    let s = freshSim();
    for (let i = 0; i < n; i++) f.steps[i].run(s);
    setSim(s);
    setResults(r => r.slice(0, -1));
  };
  const pad = n => String(n).padStart(2, "0");
  const ts = n => {
    const t = 42 * 60 + 11 + n;
    return `10:${pad(Math.floor(t / 60) % 60)}:${pad(t % 60)}`;
  };
  const logRows = [];
  let sec = 0;
  results.forEach(res => {
    (res.entries || []).forEach(e => {
      logRows.push({
        t: ts(sec++),
        level: e.kind === "err" ? "ERROR" : e.kind === "info" ? "INFO" : "EVENT",
        name: e.name,
        detail: e.detail,
        kind: e.kind
      });
    });
  });
  f.steps.slice(stepIndex).forEach(st => {
    logRows.push({
      t: ts(sec++),
      level: "PENDING",
      name: st.action,
      detail: "",
      kind: "pending"
    });
  });
  const holders = Object.keys(sim.balances);
  const StatusTag = ({state}) => {
    const map = {
      done: [C.success, "Complete"],
      now: [C.blue, "In progress"],
      future: [C.sub, "Pending"]
    };
    const [col, txt] = map[state];
    return <span style={{
      fontFamily: sans,
      fontSize: 11,
      fontWeight: 600,
      color: col
    }}>{txt}</span>;
  };
  const levelColor = {
    EVENT: C.blue,
    INFO: C.sec,
    ERROR: C.error,
    PENDING: C.sub
  };
  return <div className="wf" style={{
    margin: "22px 0",
    maxWidth: 760,
    borderRadius: 8,
    border: `1px solid ${C.border}`,
    background: C.white,
    overflow: "hidden",
    boxShadow: "0 1px 2px rgba(10,11,13,.04)"
  }}>
      <style>{`
        .wf, .wf * { box-sizing: border-box; }
        .wf-nav { display: flex; gap: 20px; }
        .wf-split { display: grid; grid-template-columns: 43% 57%; }
        .wf-rail { border-right: 1px solid ${C.border}; }
        @keyframes wf-in { from { opacity: 0; transform: translateY(3px);} to { opacity: 1; transform: none; } }
        .wf-anim { animation: wf-in .26s ease both; }
        .wf-btn { font-family: ${sans}; font-size: 13px; font-weight: 600; border-radius: 6px; padding: 10px 14px; cursor: pointer; transition: filter .15s ease; border: 1px solid ${C.blue}; background: ${C.blue}; color: ${C.onBlue}; width: 100%; display: inline-flex; align-items: center; justify-content: center; gap: 7px; }
        .wf-btn:hover { filter: brightness(1.1); }
        .wf-btn:disabled { background: ${C.panel}; border-color: ${C.border}; color: ${C.sub}; cursor: default; filter: none; }
        .wf-btn2 { font-family: ${sans}; font-size: 13px; font-weight: 600; border-radius: 6px; padding: 10px 14px; cursor: pointer; background: ${C.white}; border: 1px solid ${C.border}; color: ${C.body}; width: 100%; transition: background .15s ease; }
        .wf-btn2:hover { background: ${C.panel}; }
        .wf-pill { font-family: ${sans}; font-size: 12px; font-weight: 500; border-radius: 6px; padding: 5px 10px; cursor: pointer; white-space: nowrap; color: ${C.sec}; background: ${C.white}; border: 1px solid ${C.border}; transition: all .12s ease; }
        .wf-pill:hover { color: ${C.ink}; border-color: ${C.sub}; }
        .wf-pill-on { color: ${C.onBlue}; background: ${C.blue}; border-color: ${C.blue}; }
        .wf-stage { font-family: ${sans}; font-size: 12.5px; white-space: nowrap; padding: 11px 2px; border-bottom: 2px solid transparent; display: inline-flex; align-items: center; gap: 7px; }
        @media (max-width: 640px) {
          .wf-split { grid-template-columns: 1fr; }
          .wf-rail { border-right: none; border-bottom: 1px solid ${C.border}; }
          .wf-nav { display: none; }
          .wf-stages { overflow-x: auto; }
        }
        @media (prefers-reduced-motion: reduce) { .wf-anim { animation: none !important; } }
      `}</style>

      {}
      {!pinned && <div style={{
    display: "flex",
    alignItems: "center",
    flexWrap: "wrap",
    gap: 6,
    padding: "10px 16px",
    borderBottom: `1px solid ${C.border}`,
    background: C.panel
  }}>
          <span style={{
    fontFamily: sans,
    fontSize: 10,
    fontWeight: 600,
    letterSpacing: ".6px",
    textTransform: "uppercase",
    color: C.sub,
    marginRight: 4
  }}>Scenario</span>
          {order.map(k => <button key={k} className={k === active ? "wf-pill wf-pill-on" : "wf-pill"} onClick={() => select(k)}>{FLOWS[k].label}</button>)}
        </div>}

      {}
      <div style={{
    display: "flex",
    alignItems: "center",
    gap: 12,
    padding: "0 16px",
    borderBottom: `1px solid ${C.border}`,
    background: C.white
  }}>
        <div className="wf-stages" style={{
    display: "flex",
    gap: 22,
    flex: 1,
    minWidth: 0,
    overflowX: "auto"
  }}>
          {f.steps.map((st, i) => {
    const state = i < stepIndex ? "done" : i === stepIndex ? "now" : "future";
    const col = state === "future" ? C.sub : state === "now" ? C.blue : C.ink;
    return <span key={i} className="wf-stage" style={{
      color: col,
      borderBottomColor: state === "now" ? C.blue : "transparent",
      fontWeight: state === "now" ? 600 : 500
    }}>
                <span style={{
      fontFamily: mono,
      fontSize: 11,
      opacity: .7
    }}>{i + 1}</span>{st.stage}
                {state === "done" && <svg viewBox="0 0 24 24" width="12" height="12" fill="none" stroke={C.success} strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M20 6 9 17l-5-5" /></svg>}
              </span>;
  })}
        </div>
        <span style={{
    fontFamily: sans,
    fontSize: 10,
    fontWeight: 600,
    letterSpacing: ".6px",
    textTransform: "uppercase",
    color: C.sub,
    border: `1px solid ${C.border}`,
    borderRadius: 5,
    padding: "2px 6px",
    flexShrink: 0
  }}>Demo</span>
        {results.length > 0 && <button onClick={reset} title="Reset" style={{
    display: "inline-flex",
    alignItems: "center",
    justifyContent: "center",
    width: 28,
    height: 24,
    borderRadius: 6,
    background: "transparent",
    border: `1px solid ${C.border}`,
    cursor: "pointer",
    color: C.sec,
    flexShrink: 0
  }}>
            <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M21 12a9 9 0 1 1-3-6.7L21 8" /><path d="M21 3v5h-5" /></svg>
          </button>}
      </div>

      {}
      <div className="wf-split">
        {}
        <div className="wf-rail" style={{
    padding: "16px 16px 14px",
    background: C.white
  }}>
          {f.steps.map((st, i) => {
    const state = i < stepIndex ? "done" : i === stepIndex ? "now" : "future";
    const last = i === f.steps.length - 1;
    return <div key={i} style={{
      display: "flex",
      gap: 11
    }}>
                <div style={{
      display: "flex",
      flexDirection: "column",
      alignItems: "center",
      width: 24,
      flexShrink: 0
    }}>
                  <span style={{
      width: 24,
      height: 24,
      borderRadius: "50%",
      display: "inline-flex",
      alignItems: "center",
      justifyContent: "center",
      fontFamily: sans,
      fontSize: 11.5,
      fontWeight: 600,
      color: state === "future" ? C.sub : C.onBlue,
      background: state === "done" ? C.success : state === "now" ? C.blue : "transparent",
      border: `1.5px solid ${state === "done" ? C.success : state === "future" ? C.border : C.blue}`
    }}>
                    {state === "done" ? <svg viewBox="0 0 24 24" width="13" height="13" fill="none" stroke={C.onBlue} strokeWidth="3.2" strokeLinecap="round" strokeLinejoin="round"><path d="M20 6 9 17l-5-5" /></svg> : i + 1}
                  </span>
                  {!last && <div style={{
      flex: 1,
      width: 2,
      minHeight: 22,
      marginTop: 4,
      marginBottom: 2,
      background: i < stepIndex ? C.blue : C.border
    }} />}
                </div>
                <div style={{
      flex: 1,
      paddingBottom: last ? 0 : 14,
      minWidth: 0
    }}>
                  <div style={{
      fontFamily: sans,
      fontSize: 13,
      fontWeight: state === "future" ? 500 : 600,
      color: state === "future" ? C.sub : C.ink,
      lineHeight: 1.3
    }}>{st.action}</div>
                  <div style={{
      marginTop: 2
    }}><StatusTag state={state} /></div>
                </div>
              </div>;
  })}

          {}
          {f.readout && holders.length > 0 && <div style={{
    marginTop: 14,
    paddingTop: 12,
    borderTop: `1px solid ${C.border}`
  }}>
              <div style={{
    fontFamily: sans,
    fontSize: 10,
    fontWeight: 600,
    letterSpacing: ".6px",
    textTransform: "uppercase",
    color: C.sub,
    marginBottom: 8
  }}>{sim.multiplier === 1 ? "Holdings" : "Raw → displayed holdings"}</div>
              <div style={{
    display: "grid",
    gap: 6
  }}>
                {holders.map(a => <div key={a} style={{
    display: "flex",
    alignItems: "center",
    gap: 8,
    fontFamily: sans,
    fontSize: 12.5,
    color: C.body
  }}>
                    <span style={{
    width: 8,
    height: 8,
    borderRadius: "50%",
    background: dot[a] || C.sub,
    flexShrink: 0
  }} />
                    <span style={{
    flex: 1
  }}>{a}</span>
                    {sim.blocked === a && <span style={{
    fontFamily: sans,
    fontSize: 9.5,
    fontWeight: 600,
    letterSpacing: ".3px",
    textTransform: "uppercase",
    color: C.error,
    border: `1px solid ${C.error}`,
    borderRadius: 4,
    padding: "0 4px"
  }}>blocked</span>}
                    {sim.paused && a === "Alice" && <span style={{
    fontFamily: sans,
    fontSize: 9.5,
    fontWeight: 600,
    letterSpacing: ".3px",
    textTransform: "uppercase",
    color: C.error,
    border: `1px solid ${C.error}`,
    borderRadius: 4,
    padding: "0 4px"
  }}>paused</span>}
                    <span style={{
    fontFamily: mono,
    fontSize: 12.5,
    fontWeight: 600,
    color: C.ink
  }}>{fmt(sim.balances[a] || 0)}{sim.multiplier !== 1 && ` → ${fmt((sim.balances[a] || 0) * sim.multiplier)}`}</span>
                  </div>)}
              </div>
            </div>}
        </div>

        {}
        <div style={{
    padding: "16px 18px",
    background: C.white,
    minWidth: 0
  }}>
          {done ? <div className="wf-anim">
              <div style={{
    display: "inline-flex",
    alignItems: "center",
    gap: 7,
    fontFamily: sans,
    fontSize: 12.5,
    fontWeight: 600,
    color: C.success,
    background: C.successSoft,
    borderRadius: 6,
    padding: "5px 10px"
  }}>
                <svg viewBox="0 0 24 24" width="13" height="13" fill="none" stroke={C.success} strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M20 6 9 17l-5-5" /></svg>
                Flow complete
              </div>
              <div style={{
    fontFamily: sans,
    fontSize: 13.5,
    color: C.body,
    lineHeight: 1.5,
    margin: "12px 0 16px"
  }}>{f.title} — every step ran onchain in the simulation above.</div>
              <button className="wf-btn2" onClick={reset}>Run again</button>
            </div> : <div className="wf-anim" key={stepIndex}>
              <div style={{
    fontFamily: sans,
    fontSize: 15,
    fontWeight: 600,
    letterSpacing: "-0.01em",
    color: C.ink
  }}>{cur.action}</div>
              <div style={{
    fontFamily: sans,
    fontSize: 13,
    color: C.sec,
    lineHeight: 1.5,
    marginTop: 5
  }}>{cur.text}</div>

              <div style={{
    marginTop: 14,
    border: `1px solid ${C.border}`,
    borderRadius: 8,
    overflow: "hidden"
  }}>
                {cur.summary.map(([k, val], i) => {
    const isM = val && typeof val === "object" && val.mono;
    const v = isM ? val.v : val;
    return <div key={i} style={{
      display: "flex",
      alignItems: "center",
      justifyContent: "space-between",
      gap: 12,
      padding: "9px 12px",
      borderTop: i ? `1px solid ${C.border}` : "none"
    }}>
                      <span style={{
      fontFamily: sans,
      fontSize: 12.5,
      color: C.sec
    }}>{k}</span>
                      <span style={{
      fontFamily: isM ? mono : sans,
      fontSize: isM ? 12 : 12.5,
      fontWeight: isM ? 500 : 600,
      color: C.ink,
      textAlign: "right",
      wordBreak: "break-word"
    }}>
                        {k === "Network" && <span style={{
      display: "inline-block",
      width: 7,
      height: 7,
      borderRadius: "50%",
      background: C.cerulean,
      marginRight: 6
    }} />}
                        {v}
                      </span>
                    </div>;
  })}
              </div>

              <div style={{
    marginTop: 14,
    display: "grid",
    gap: 8
  }}>
                <button className="wf-btn" onClick={runStep}>
                  {cur.action}
                  <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" strokeWidth="2.4" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12h14M13 6l6 6-6 6" /></svg>
                </button>
                {results.length > 0 && <button className="wf-btn2" onClick={back}>Back</button>}
              </div>
            </div>}
        </div>
      </div>

      {}
      <div style={{
    borderTop: `1px solid ${C.border}`,
    background: C.white
  }}>
        <div style={{
    display: "flex",
    alignItems: "center",
    padding: "10px 16px",
    borderBottom: `1px solid ${C.border}`
  }}>
          <span style={{
    fontFamily: sans,
    fontSize: 12.5,
    fontWeight: 600,
    color: C.ink
  }}>Transaction event log</span>
        </div>
        <div style={{
    maxHeight: 168,
    overflowY: "auto",
    padding: "6px 0"
  }}>
          {logRows.map((r, i) => <div key={i} className={r.kind === "pending" ? "" : "wf-anim"} style={{
    display: "flex",
    alignItems: "center",
    gap: 10,
    padding: "5px 16px",
    opacity: r.kind === "pending" ? 0.5 : 1
  }}>
              <span style={{
    fontFamily: mono,
    fontSize: 11,
    color: C.sub,
    flexShrink: 0
  }}>{r.t}</span>
              <span style={{
    fontFamily: mono,
    fontSize: 10.5,
    fontWeight: 600,
    color: levelColor[r.level],
    flexShrink: 0,
    width: 58
  }}>[{r.level}]</span>
              <span style={{
    fontFamily: mono,
    fontSize: 11.5,
    color: r.kind === "err" ? C.error : C.body,
    flex: 1,
    minWidth: 0,
    whiteSpace: "nowrap",
    overflow: "hidden",
    textOverflow: "ellipsis"
  }}>
                {r.name}{r.detail ? <span style={{
    color: C.sub
  }}> · {r.detail}</span> : null}
              </span>
              <span style={{
    flexShrink: 0,
    width: 14,
    display: "inline-flex",
    justifyContent: "center"
  }}>
                {r.kind === "err" ? <svg viewBox="0 0 24 24" width="12" height="12" fill="none" stroke={C.error} strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M18 6 6 18M6 6l12 12" /></svg> : r.kind === "pending" ? <span style={{
    width: 9,
    height: 9,
    borderRadius: "50%",
    border: `1.5px solid ${C.border}`
  }} /> : <svg viewBox="0 0 24 24" width="12" height="12" fill="none" stroke={C.success} strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M20 6 9 17l-5-5" /></svg>}
              </span>
            </div>)}
        </div>
      </div>

      {}
      <div style={{
    padding: "10px 16px",
    background: C.panel,
    borderTop: `1px solid ${C.border}`,
    display: "flex",
    alignItems: "center",
    gap: 10
  }}>
        <span style={{
    fontFamily: sans,
    fontSize: 11,
    color: C.sub,
    lineHeight: 1.4
  }}>{f.erc20}</span>
      </div>
    </div>;
};

Distribute shares to multiple holders in one all-or-nothing transaction with B20 Asset's `batchMint`. Every recipient must pass the token's mint-receiver policy, and the combined issuance must stay below its supply cap.

#### Demo

<AssetDemo flow="issue" />

<Note>
  Complete [Launch a B20 token](/get-started/launch-b20-token) first. These samples target `base-std@v1.0.0`, `viem@2.55.11`, and Base Foundry `v1.1.1`.
</Note>

## Issue and verify the shares

<CodeGroup>
  ```typescript TypeScript lines wrap expandable highlight={8} theme={null}
  import { parseUnits, type Address } from "viem";
  import { publicClient } from "../../shared/clients.js";
  import { assetAbi, b20Abi } from "../abi.js";
  import { sendContract } from "../write.js";

  export async function issueShares(token: Address, holders: [Address, Address]) {
    const amounts = [parseUnits("600", 6), parseUnits("400", 6)] as const;
    await sendContract({ address: token, abi: assetAbi, functionName: "batchMint", args: [holders, amounts] });
    const balances = await Promise.all(holders.map((holder) => publicClient.readContract({ address: token, abi: b20Abi, functionName: "balanceOf", args: [holder] })));
    if (balances[0] !== amounts[0] || balances[1] !== amounts[1]) throw new Error("Unexpected issuance balances");
  }
  ```

  ```solidity Solidity lines wrap expandable highlight={8} theme={null}
      function issueShares(address token, address alice, address bob) public {
          address[] memory recipients = new address[](2);
          recipients[0] = alice;
          recipients[1] = bob;
          uint256[] memory amounts = new uint256[](2);
          amounts[0] = 600e6;
          amounts[1] = 400e6;
          IB20Asset(token).batchMint(recipients, amounts);
      }
  ```

  ```bash CLI lines wrap expandable highlight={1} theme={null}
  base-cast send "$TOKEN_ADDRESS" "batchMint(address[],uint256[])" \
    "[$ALICE,$BOB]" "[600000000,400000000]" --rpc-url "$RPC_URL" --private-key "$PRIVATE_KEY"
  base-cast call "$TOKEN_ADDRESS" "balanceOf(address)(uint256)" "$ALICE" --rpc-url "$RPC_URL"
  ```
</CodeGroup>

See the [complete verified B20 examples](https://github.com/base/docs/tree/master/examples/verified-doc-samples) for imports, client construction, and runnable projects.

<Check>
  Alice holds 600 EXM and Bob holds 400 EXM after the all-or-nothing batch.
</Check>

<Warning>
  The entire batch reverts if lengths differ, a recipient fails policy, or total supply would exceed the cap.
</Warning>

## See also

* [Restrict eligible holders](/build-on-base/tokenize-stocks/restrict-eligible-holders) · [Announce a stock dividend](/build-on-base/tokenize-stocks/announce-a-stock-dividend)
* [Batch mint](/base-chain/specs/upgrades/beryl/b20#batch-mint) and [Mint](/base-chain/specs/upgrades/beryl/b20#mint) in the B20 standard