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 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 0x7aff07d51f0bf67dc8f37e201674779c769bb4e436991313040d9dcdddb8dd68. 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/d04d8690-37ba-41e8-9a05-501ab2d4dc11.json and https://artists.proofprofile.net/proofs/artist/d04d8690-37ba-41e8-9a05-501ab2d4dc11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Historia Musical de Los Nemus del Pacífico
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 0xaf545cd758fb73fc4217dae2662e2561cd7c14232a6be10fe33fb9b8520f3e26. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/COF019601607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd049cdfd87518959652f1b7e1e4558fa5f5e82cc6c8b0b9a3e050ba8085a590. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:54:13Z), 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/COF019601605.
Historia Musical de los Nemus del Pacífico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ebf0951c153598acc020407f3e72b808cdf908d3ff66c9b3ebe9cf73538c47. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/COF018812451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bdf56e93150fb119ecdbe69a23288c2eaddae07d1c49914bbedc6ad399557d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COF010001150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64c694a193cc33f68bf563e4273f22ec64184fec0aadbc8c6bcb1f86569d2eb. 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/COF019000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd91bdbbe3f9a388bec8cf28da14f2ad8f8dc56f87a1ef37633a723739d29ac. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/COF019200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579c137403bad4f14824c7f56f6df0c07daac90169c59da154bf6f76a196303b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/COF019401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b47cb495d44475d8ba562d893a6d3e4898e1b58c16bbeb2a3ecb1d832de6859. 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/COF019200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf545cd758fb73fc4217dae2662e2561cd7c14232a6be10fe33fb9b8520f3e26. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/COF019601607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bdf56e93150fb119ecdbe69a23288c2eaddae07d1c49914bbedc6ad399557d. 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/COF010001150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65565d3f8827382874939ffd4f31f1564c51c5ae2bd71afcd456415920769e09. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:25Z), 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/COF010001151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64c694a193cc33f68bf563e4273f22ec64184fec0aadbc8c6bcb1f86569d2eb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:26Z), 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/COF019000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf08b1bf01d6830610899d8e5095cae335859cc2f313de663b0a540ac86843b. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/COF019401101.
Los Nemus del Pacífico Con Alexis Murillo: Salsa y Son Montuno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc4dfe7812d4d2481b410bdd227a55dccbc6d5c76c8bee53c513a5909a21349. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/COF019000307.