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 0xab8a92b7b46849e958fcf74f469647435e606a415c9931ba8a0fe0de3189824a. 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/32af6a49-e34c-469c-9db5-acee712aece2.json and https://artists.proofprofile.net/proofs/artist/32af6a49-e34c-469c-9db5-acee712aece2.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 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 0x5b93dc5b72635e223fdafaf12a42eb36eada04ed1e84f9a8eabd7293cfdf7365. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCABG1218352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bd8a69110c06afd241313aea9ef86ae2c676ac80a8deb812f4a3e97451b736. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCABG1218355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2686e479fd22c9c5394a2a9307c484547c36345110dd121fc1879166fe76aa. 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/TCABG1218357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b25d5c382fcbff2f4648a76c54cf298d77489ef4e7fa53c24af2741ad89174. 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/TCABG1218359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bf3c88bcf06b451420c3e52fe37aebe4e80c99851226e313b553259ce74ca3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FRX451585402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d239f7e6668d11cd8a89e9a1545d764eb7267cb80a2c20461f654d11159a50. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRX451585404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd72fad263e1193a828305a962a940694fd32b380960f9fca0e153599fc3035e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX451585405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b2d63e016ec8d492465f0f1ad749025316d7ff9ba415479ce327e6c3c2375. 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/COA8B1700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4776d47624628e84a8ed16eb5c31e17f258cff4ecf667da0ca1f0008e1765232. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/FRX201923861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8a9e23902dd8efc6985679d17c08e4e8993b0e4583200c1bd6f6bb877a5a1. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/COSO12400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5796a515bbf8aee996c4b3e24213d96c1bd372397c6a9880597d29875bc65e. 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/COSO12400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3c77eda328230ce4c845071923ea49a8be14b67615a38c22248bb0429025fe. 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/COSO12400018.
Balas De Bebé (Y Otras Canciones De Cuna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50933de1ae656a64de916a480e206516d042b10cf065f3c76b8410e6f906d652. 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/COSO12300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcab7e75851a1876c3f82983a2990eff8e21852cfd93bc8b0ed72c50f606f46. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/COSO12300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81f816ed644d291c0056d44061d54695aacd3d2848cb1d8aa17ddfce9f458e. 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/COSO12300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765639c0a99ab9106abd6fbf3fc2f946256fa6ca9e72cee180f030a9321c5e2e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/COSO12300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76202927fe8f38945d76a2dc2f0b8aecd199b37c8c99236e8981f1204b3dad51. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COSO12300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53082da9466b79708759946f1b02853e137d1d407e5e5ab5146304bebf175887. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/COSO12300056.