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 0xc56fdb1a5286d02e6584fed2443a405b1882112f876ce89066ed67fecdbb120f. 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/9b319f57-6753-4e2b-a042-bbab0e98d699.json and https://artists.proofprofile.net/proofs/artist/9b319f57-6753-4e2b-a042-bbab0e98d699.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 0x3653d1a48d247adc21b7d82a2b22daaadc39e1d7bc4784e7fbb87dbd34c46420. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUR41128602.
Staring at the Ceiling (feat. James Petralli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c816a35dfa28334a9bf368374b6fb7342f025d7a11ec8a7f0b6cda35625243. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:13Z), 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/US66W1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe01e37d06f80c28793b03133f3428791befdf05f5cb5712a8ba6de033e406a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/US66W1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911916135f243cd68336004a1615a64f4726418c02d0f76c5f69f0e82c6130e6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US66W1600007.
Has Regresado Viejo Amigo (feat. Natalia Clavier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f177e119ea64bc16ba4b69081a2321185fcb4d18351b68e82bc89229ec03c15. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:25:28Z), 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/US66W1600008.