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

# Private Transactions

> Run confidential enterprise payments on Base with Base Ledgers — balances, transfers, and counterparties stay private while funds settle onchain.

export const LedgersDemo = ({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: "var(--wf-blue)",
    onBlue: "var(--wf-on-blue)",
    cerulean: "var(--wf-cerulean)",
    ink: "var(--wf-ink)",
    body: "var(--wf-body)",
    sec: "var(--wf-sec)",
    sub: "var(--wf-sub)",
    border: "var(--wf-border)",
    panel: "var(--wf-panel)",
    white: "var(--wf-surface)",
    success: "var(--wf-success)",
    lime: "var(--wf-lime)",
    error: "var(--wf-error)",
    warn: "var(--wf-warn)",
    blueSoft: "var(--wf-blue-soft)",
    successSoft: "var(--wf-success-soft)",
    errorSoft: "var(--wf-error-soft)"
  };
  const TOKEN = "USDC";
  const NETWORK = "Base Vibenet";
  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 M = v => ({
    v,
    mono: true
  });
  const freshSim = () => ({});
  const FLOWS = {
    deposit: {
      label: "Deposit",
      title: "Deposit into a ledger",
      readout: true,
      contrast: "Without a private ledger, the receiving account is visible to everyone onchain.",
      privacy: [{
        label: "Asset",
        state: "public"
      }, {
        label: "Amount",
        state: "public"
      }, {
        label: "Sender",
        state: "public"
      }, {
        label: "Recipient",
        state: "hidden"
      }],
      steps: [{
        stage: "Encrypt",
        action: "Encrypt recipient",
        text: "Encrypt the recipient so deposits to one account can't be linked.",
        summary: [["Operation", "Encrypt recipient"], ["Visibility", "Private"], ["Account", M("0x9f…enc")], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("encryptRecipient", "recipient → 0x9f…enc")],
          caption: "Only the operator can decrypt it."
        })
      }, {
        stage: "Deposit",
        action: "deposit()",
        text: "Send funds through the Portal contract on Base.",
        summary: [["Operation", "Portal deposit"], ["Amount", M("100 USDC")], ["Visibility", "Recipient hidden"], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("Portal.deposit", "100 USDC · enc-recipient"), ok("Deposit", "asset, amount public · recipient hidden")]
        })
      }, {
        stage: "Credit",
        action: "Credit ledger",
        text: "The ledger decrypts the recipient and credits the account privately.",
        summary: [["Operation", "Credit account"], ["Amount", M("+100 USDC")], ["Visibility", "Private"], ["Account", M("recipient")]],
        run: () => ({
          entries: [ok("ingress.credit", "recipient +100")],
          caption: "Observers see a deposit landed — never who received it."
        })
      }]
    },
    transact: {
      label: "Transact",
      title: "Move funds inside the ledger, privately",
      readout: true,
      contrast: "On the public chain, every transfer exposes sender, recipient, and amount.",
      privacy: [{
        label: "Sender",
        state: "hidden"
      }, {
        label: "Recipient",
        state: "hidden"
      }, {
        label: "Amount",
        state: "hidden"
      }, {
        label: "Activity",
        state: "hidden"
      }],
      steps: [{
        stage: "Transfer",
        action: "Transfer 40",
        text: "Transfer between accounts inside the ledger.",
        summary: [["Operation", "Ledger transfer"], ["From", M("Account A")], ["To", M("Account B")], ["Amount", M("40 USDC")], ["Visibility", "Private"]],
        run: () => ({
          entries: [ok("ledger.transfer", "A → B · 40")],
          caption: "Balances and transfers stay off public block explorers."
        })
      }, {
        stage: "Verify",
        action: "Check Base",
        text: "Nothing about the transfer lands on the public chain.",
        summary: [["Operation", "Inspect Base"], ["Query", M("basescan")], ["Visibility", "Private"], ["Network", NETWORK]],
        run: () => ({
          entries: [nfo("basescan", "no transfer visible")],
          caption: "Only deposits and withdrawals touch Base."
        })
      }]
    },
    withdraw: {
      label: "Withdraw",
      title: "Withdraw back to Base",
      readout: true,
      contrast: "The ledger reveals the asset and amount, but never the account behind them.",
      privacy: [{
        label: "Asset",
        state: "public"
      }, {
        label: "Amount",
        state: "public"
      }, {
        label: "Sender",
        state: "hidden"
      }, {
        label: "Recipient",
        state: "public"
      }],
      steps: [{
        stage: "Authorize",
        action: "Authorize",
        text: "Request an operator-signed withdrawal authorization.",
        summary: [["Operation", "Sign authorization"], ["Auth", M("0x4c…7b")], ["Visibility", "Private"], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("operator.sign", "auth 0x4c…7b")],
          caption: "You choose how the Portal validates it — a signature or a full proof."
        })
      }, {
        stage: "Debit",
        action: "Debit account",
        text: "Debit the account inside the ledger.",
        summary: [["Operation", "Debit account"], ["Amount", M("−100 USDC")], ["Visibility", "Private"]],
        run: () => ({
          entries: [ok("ledger.debit", "account −100")]
        })
      }, {
        stage: "Release",
        action: "withdraw()",
        text: "Submit the authorization; the Portal releases funds on Base.",
        summary: [["Operation", "Portal withdraw"], ["Amount", M("100 USDC")], ["Destination", M("recipient")], ["Visibility", "Sender hidden"], ["Network", NETWORK]],
        run: () => ({
          entries: [ok("Portal.withdraw", "100 USDC → recipient"), ok("Withdraw", "sender hidden · recipient public")],
          caption: "Deposits and withdrawals stay unlinkable."
        })
      }]
    }
  };
  const order = ["deposit", "transact", "withdraw"];
  const pinned = flow && FLOWS[flow] ? flow : null;
  const [active, setActive] = useState(pinned || "deposit");
  const [sim, setSim] = useState(freshSim);
  const [results, setResults] = useState([]);
  const f = FLOWS[active] || FLOWS.deposit;
  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 = {
      ...sim
    };
    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 StatusTag = ({state}) => {
    const map = {
      done: [C.success, "Complete"],
      now: [C.blue, "In progress"],
      future: [C.sub, "Pending"]
    };
    const [col, txt] = map[state];
    return <span className="wf-t-footnote" style={{
      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: "var(--wf-shadow)"
  }}>
      <style>{`
        /* ---- Base design system: color tokens (light) ---- */
        .wf {
          --wf-sans: 'Base Sans','Inter Tight',Inter,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
          --wf-sans-text: 'Base Sans Text','Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
          --wf-mono: 'Base Mono','Roboto Mono',ui-monospace,'SF Mono',Menlo,Consolas,monospace;
          --wf-blue: #0000ff; --wf-on-blue: #ffffff; --wf-cerulean: #3c8aff;
          --wf-ink: #0a0b0d; --wf-body: #32353d; --wf-sec: #5b616e; --wf-sub: #717886; --wf-muted: #787878;
          --wf-border: #dee1e7; --wf-panel: #eef0f3; --wf-surface: #ffffff;
          --wf-success: #66c800; --wf-lime: #b6f569; --wf-error: #fc401f; --wf-warn: #ffd12f;
          --wf-blue-soft: rgba(0,0,255,.06); --wf-success-soft: rgba(102,200,0,.12); --wf-error-soft: rgba(252,64,31,.10);
          --wf-shadow: 0 1px 2px rgba(10,11,13,.04);
        }
        /* ---- Dark theme: system preference ---- */
        @media (prefers-color-scheme: dark) {
          .wf {
            --wf-blue: #4d6bff; --wf-on-blue: #ffffff; --wf-cerulean: #6ea8ff;
            --wf-ink: #ffffff; --wf-body: #dee1e7; --wf-sec: #b1b7c3; --wf-sub: #8a91a0; --wf-muted: #787878;
            --wf-border: #2b2f36; --wf-panel: #17181b; --wf-surface: #0f1012;
            --wf-success: #7cd442; --wf-lime: #b6f569; --wf-error: #ff6a4d; --wf-warn: #ffd12f;
            --wf-blue-soft: rgba(77,107,255,.16); --wf-success-soft: rgba(124,212,66,.16); --wf-error-soft: rgba(255,106,77,.16);
            --wf-shadow: 0 1px 2px rgba(0,0,0,.4);
          }
        }
        /* ---- Dark theme: docs explicit toggle wins over system ---- */
        html.dark .wf, :root[data-theme="dark"] .wf, [data-theme="dark"] .wf {
          --wf-blue: #4d6bff; --wf-on-blue: #ffffff; --wf-cerulean: #6ea8ff;
          --wf-ink: #ffffff; --wf-body: #dee1e7; --wf-sec: #b1b7c3; --wf-sub: #8a91a0; --wf-muted: #787878;
          --wf-border: #2b2f36; --wf-panel: #17181b; --wf-surface: #0f1012;
          --wf-success: #7cd442; --wf-lime: #b6f569; --wf-error: #ff6a4d; --wf-warn: #ffd12f;
          --wf-blue-soft: rgba(77,107,255,.16); --wf-success-soft: rgba(124,212,66,.16); --wf-error-soft: rgba(255,106,77,.16);
          --wf-shadow: 0 1px 2px rgba(0,0,0,.4);
        }
        /* ---- Light theme: docs explicit toggle wins over system dark ---- */
        html.light .wf, :root[data-theme="light"] .wf, [data-theme="light"] .wf {
          --wf-blue: #0000ff; --wf-on-blue: #ffffff; --wf-cerulean: #3c8aff;
          --wf-ink: #0a0b0d; --wf-body: #32353d; --wf-sec: #5b616e; --wf-sub: #717886; --wf-muted: #787878;
          --wf-border: #dee1e7; --wf-panel: #eef0f3; --wf-surface: #ffffff;
          --wf-success: #66c800; --wf-lime: #b6f569; --wf-error: #fc401f; --wf-warn: #ffd12f;
          --wf-blue-soft: rgba(0,0,255,.06); --wf-success-soft: rgba(102,200,0,.12); --wf-error-soft: rgba(252,64,31,.10);
          --wf-shadow: 0 1px 2px rgba(10,11,13,.04);
        }

        .wf, .wf * { box-sizing: border-box; }

        /* ---- Base design system: text variants (mobile → md 768px) ---- */
        .wf-t-title2 { font-family: var(--wf-sans); font-weight: 400; letter-spacing: -0.02em; font-size: 20px; line-height: 28px; }
        .wf-t-title3 { font-family: var(--wf-sans); font-weight: 400; letter-spacing: -0.02em; font-size: 18px; line-height: 26px; }
        .wf-t-headline { font-family: var(--wf-sans); font-weight: 400; letter-spacing: -0.02em; font-size: 16px; line-height: 24px; }
        .wf-t-body { font-family: var(--wf-sans-text); font-weight: 400; letter-spacing: 0; font-size: 15px; line-height: 1.4; }
        .wf-t-caption { font-family: var(--wf-sans); font-weight: 500; letter-spacing: 0; text-transform: uppercase; font-size: 11px; line-height: 14px; }
        .wf-t-button { font-family: var(--wf-sans); font-weight: 400; letter-spacing: -0.01em; font-size: 15px; line-height: 1.4; }
        .wf-t-footnote { font-family: var(--wf-sans); font-weight: 400; letter-spacing: 0; font-size: 11px; line-height: 14px; }
        .wf-t-mono { font-family: var(--wf-mono); font-weight: 400; font-size: 11.5px; line-height: 1.5; }
        @media (min-width: 768px) {
          .wf-t-title2 { font-size: 24px; line-height: 32px; }
          .wf-t-title3 { font-size: 20px; line-height: 28px; }
          .wf-t-headline { font-size: 18px; line-height: 28px; }
          .wf-t-body { font-size: 16px; line-height: 1.4; }
          .wf-t-caption { font-size: 12px; line-height: 16px; }
          .wf-t-button { font-size: 16px; line-height: 1.4; }
          .wf-t-footnote { font-size: 12px; line-height: 16px; }
        }

        .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 className="wf-t-caption" style={{
    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 className="wf-t-caption" style={{
    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 className="wf-t-body" style={{
      fontWeight: state === "future" ? 400 : 500,
      color: state === "future" ? C.sub : C.ink
    }}>{st.action}</div>
                  <div style={{
      marginTop: 2
    }}><StatusTag state={state} /></div>
                </div>
              </div>;
  })}

          {}
          {f.readout && f.privacy && <div style={{
    marginTop: 14,
    paddingTop: 12,
    borderTop: `1px solid ${C.border}`
  }}>
              <div className="wf-t-caption" style={{
    color: C.sub,
    marginBottom: 8
  }}>What's exposed onchain</div>
              <div style={{
    display: "grid",
    gap: 6
  }}>
                {f.privacy.map(p => {
    const hidden = p.state === "hidden";
    return <div key={p.label} className="wf-t-body" style={{
      display: "flex",
      alignItems: "center",
      gap: 8,
      color: C.body
    }}>
                      <span style={{
      width: 14,
      flexShrink: 0,
      display: "inline-flex",
      justifyContent: "center",
      color: hidden ? C.blue : C.sub
    }}>
                        {hidden ? <svg viewBox="0 0 24 24" width="12" height="12" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><rect x="5" y="11" width="14" height="9" rx="2" /><path d="M8 11V8a4 4 0 0 1 8 0v3" /></svg> : <svg viewBox="0 0 24 24" width="12" height="12" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M2 12s3.5-7 10-7 10 7 10 7-3.5 7-10 7-10-7-10-7z" /><circle cx="12" cy="12" r="3" /></svg>}
                      </span>
                      <span style={{
      flex: 1
    }}>{p.label}</span>
                      <span className="wf-t-caption" style={{
      color: hidden ? C.blue : C.sub,
      border: `1px solid ${hidden ? C.blue : C.border}`,
      borderRadius: 4,
      padding: "0 4px"
    }}>{hidden ? "Hidden" : "Public"}</span>
                    </div>;
  })}
              </div>
            </div>}
        </div>

        {}
        <div style={{
    padding: "16px 18px",
    background: C.white,
    minWidth: 0
  }}>
          {done ? <div className="wf-anim">
              <div className="wf-t-footnote" style={{
    display: "inline-flex",
    alignItems: "center",
    gap: 7,
    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 className="wf-t-body" style={{
    color: C.body,
    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 className="wf-t-headline" style={{
    color: C.ink
  }}>{cur.action}</div>
              <div className="wf-t-body" style={{
    color: C.sec,
    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 className="wf-t-footnote" style={{
      color: C.sec
    }}>{k}</span>
                      <span style={{
      fontFamily: isM ? "var(--wf-mono)" : "var(--wf-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 className="wf-t-headline" style={{
    fontSize: 13,
    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 className="wf-t-footnote" style={{
    color: C.sub
  }}>{f.contrast}</span>
      </div>
    </div>;
};

<Warning>
  Base Ledgers is in early access. [Request access](https://www.coinbase.com/developer-platform/developer-interest) to run your own ledger, or use [Coinbase Managed](https://docs.cdp.coinbase.com/payments/overview) for a managed service built on it.
</Warning>

Run your own private payments product on Base with **Base Ledgers**. Balances, transfers, and counterparties stay off public block explorers, while funds settle on Base through a single `Portal` contract. Compliance is enforced at the ledger level with your own KYC controls, funds are self-custodied in a contract you control, and every deposit and withdrawal is an onchain call you can bundle atomically with other Base actions.

#### Demo

<LedgersDemo />

#### Guides

<CardGroup cols={2}>
  <Card title="Deposit to a ledger" icon="arrow-down-to-line" href="/build-on-base/ledgers/deposit">
    Move funds from Base into the ledger with an encrypted recipient.
  </Card>

  <Card title="Transfer inside a ledger" icon="shuffle" href="/build-on-base/ledgers/transfer">
    Move balances inside the ledger with nothing on the public chain.
  </Card>

  <Card title="Withdraw from a ledger" icon="arrow-up-from-line" href="/build-on-base/ledgers/withdraw">
    Release funds back to Base while keeping the account private.
  </Card>
</CardGroup>

## Why Base Ledgers

* **Private by default.** Balances, transactions, and transfers stay off public block explorers. Deposits hide the recipient and withdrawals hide the sender, so the two stay unlinkable.
* **Compliant.** An operator gates the ledger with its own KYC and compliance controls.
* **Composable with Base.** Deposits and withdrawals are onchain calls you can bundle with other actions — deposit-and-act or withdraw-and-swap — that settle together or not at all.
* **Configurable.** Run a ledger on your own terms with self-custodied funds and custom logic for how transactions are processed.

## Built for

<CardGroup cols={2}>
  <Card title="B2B payments" icon="building">
    Pay vendors without broadcasting your supplier list to the public chain.
  </Card>

  <Card title="Payroll & payouts" icon="money-check-dollar">
    Run onchain payroll without publishing what every employee or contractor earns.
  </Card>

  <Card title="Treasury operations" icon="vault">
    Move balances between corporate accounts, custodians, and counterparties privately.
  </Card>

  <Card title="Cross-border remittance" icon="globe">
    Run KYC-gated corridors where sender, recipient, and amount aren't exposed.
  </Card>
</CardGroup>

## How it works

A payment moves through three stages: funds enter through the Portal contract, move privately within the ledger, and exit back to Base. The operator runs the services that process each step and decides how to authorize withdrawals.

1. **[Deposit](/build-on-base/ledgers/deposit).** A user moves funds from Base into the ledger. The recipient is encrypted, so deposits to one account stay unlinked.
2. **[Transfer inside a ledger](/build-on-base/ledgers/transfer).** Inside the ledger, users transfer, swap, and earn yield while balances and activity remain private.
3. **[Withdraw](/build-on-base/ledgers/withdraw).** A user moves funds back to Base. Onchain, a withdrawal reveals the asset and amount but not the account behind it.