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 0x181941228bb30633cee3d631e5f27a0ca6ee7f27f397d99f3fe161cf9bc06489. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc3aba77-c8f0-439f-aebd-99af3e594854.json and https://artists.proofprofile.net/proofs/artist/fc3aba77-c8f0-439f-aebd-99af3e594854.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x74ab04546c12db26580333db4c9bb664a435dfe083a2c56466535b2d30b8245b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ5AB1725129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e8d227ffe6efcfcd3a449d9b63795df30b392f1c62f34f25ef71b839826474. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:48Z), 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/BX2381800004.
Até Que o Senhor Venha / Ele Não É Mais um Bebê na Manjedoura
Na Terra Como no Céu / Como Prometeste / Nome Mais Doce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fa9ef584200f3ee68d81ef835886b78a27c3d96d176dbe1672eee7211c00ac. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BKYEU2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa094f72483e5984a9a2ac7fc816ea554c34844dc5c6b3ab9bbf7e74dc006d7c5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BKYEU2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f6a75f86a5a3120e65325c4587cbf6ef33c7760ededc4d600ffb62e267aa22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:47Z), 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/BC1GL2451009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d3ba1585c0e2424d1796989b64a89136b41f49765f9b1581ba23c6cc42e2f0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:07Z), 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/BC1GL2451023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64004e805bff809440bb5ec328c320a14a082eaf159700220af12543b905126. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BC1GL2451037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bb811f50104f0dc8ba9fa9a261a91d2c1e4fec3ac03ebc37d04753aaeffbeb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXKMK2300007.