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 0xae913b7e8cb4a2cceb69d3c95c5982174287f419d6e4b8e0553a391acca218e4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17913dba-8e3c-4f10-b408-4605cc86d11f.json and https://artists.proofprofile.net/proofs/artist/17913dba-8e3c-4f10-b408-4605cc86d11f.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 0xb185652fd38e7ee67c1b476a4a6c364fc469aef7b8491fb2564ba5bb4b5d4033. 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/ARL4J1900966.
Baile Con Amigos, Vol. 1: Respetemos el Duelo / La Díficil (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128df996203d1160b93ec0b96008ff1f368641299f0abe7507e4107937085a19. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ARBEI2200001.
Olvidarte De Mí Jamás Podrás (En Vivo En Tucumán)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7d0210a33e2aeb7e5ca0b80140cdba3f9e540d00835c8c38da2a7a316f9562. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ARIXB2303892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcfabb2a983814d72b9b897a329378679ce314d0b246607176c78063db2f728. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ARA492300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ace6cd827b7db34209a862607ea70c17f436484395f82bf42ef15b94ee1566b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARIXB2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a356dd81c7856d9f16e9c10d18a3434c1df4123b56e5a0cbf0142d67ecebcaf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ARIXB2402284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86bbbb551f6fd4ebfe0935c7325f00e6cd163315ed0bab49943cfc1c956b75e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARIXB2403554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27856ab6b8985839b386748b1419907251f5697611b0b2be41afbccc5c0d3d96. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:50:11Z), 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/ARIXB2500081.
Desde El Ensayo: Tattoo - Quiero Creer - Se Me Olvida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c1b7f027c06eb5d9a06948a9a4ced3ce2b5c39715bfe3a6f22be6148d9d7e1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARIXB2500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c1b7f027c06eb5d9a06948a9a4ced3ce2b5c39715bfe3a6f22be6148d9d7e1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARIXB2500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686f4b6c9c638ace9bde325ac34eb646aa6995cd0fc6a2f0e97aef5dc729466d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:45Z), 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/ARIXB2501616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab088834e5eb1e4f9104b7370f559e936ebe68dd002751c4612ed3f275ab786. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4Q2054734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8982ac9e710e0c190600ac91bb84f4ae2c5138d79885b4dc0ca13f1898bac7d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/UYM122002494.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169e970a4f3d4be80f2451f4e0d21540b4e7dce872cb81a1b4523fb52ad55095. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARY4P2000250.