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 0x716cdb88b3f8c73995730316a32de183cdf0eccebbeceb40c27103e84aaa9bf9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71100595-668c-49c0-8ca3-afa869a6ec1e.json and https://artists.proofprofile.net/proofs/artist/71100595-668c-49c0-8ca3-afa869a6ec1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Marquinho & Gilbert Interpretam Vida Reluz
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 0x4875ac8933155212159ffa1fac94c3b0892b512c50dc3fbfd4caf5791ae6f1e1. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BRCMP0400185.
Marquinho & Gilbert Interpretam Fábio de Melo
Marquinho & Gilbert Interpretam Walmir Alencar
Marquinho & Gilbert Interpretam Pe. Zezinho SCJ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee92604cea5f0bd2011e8ad7869a2df0775f565fbd757bf26cc55d52c9529c17. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BRCMP1000219.
Marquinho & Gilbert (Interpretam Clássicos Natalinos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48727d82ea72eb96386ac922cb75cd127b196cc7a781d99429d073caf702ce48. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRCMP1200118.