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 0x4214cb27aeb7f8b9eefb22f6c614417823be7ebcabb78077cc81a4662d1abcef. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fe43182-dae9-4efa-9f6c-29beee54baf4.json and https://artists.proofprofile.net/proofs/artist/0fe43182-dae9-4efa-9f6c-29beee54baf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BATE A BCT NO SACO x QUE CHEIRIN DE XRC NO MEU DEDO
SENTA PRA MARGINAL x VOCE NAO BATE MAIS PUNHETA
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fee0f632930466cc79b2ad6496c6752d57b7edb6a741f9549ecb93e2ebfedd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXBAV2122683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113cdeec383b1dd55a9a98cd9b44b9d301822bdc4626bf2b23ca803a58ea652e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXBAV2163081.