Attaboy or Atta Boy can refer to: Atta Boy, a 1926 American silent film Attaboy (bar), a craft cocktail bar in New York City "Attaboy", a song on Perfect Velvet by Red Velvet "Attaboy", a song on
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2774c4ed9ee3a9a75d96e31888367c4d7cda5722677a3b0959d8e55cc5d75. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1267f29-7670-4a09-93b6-3c7127232323.json and https://artists.proofprofile.net/proofs/artist/c1267f29-7670-4a09-93b6-3c7127232323.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).