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 0xc53acd233131ffb0107fd399b8392be1831dad057fbffbc2a65cd4787215326a. 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/6cdde951-e94a-4aa0-96ab-39d4b14d8034.json and https://artists.proofprofile.net/proofs/artist/6cdde951-e94a-4aa0-96ab-39d4b14d8034.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 0x5a091902f8809f1c3c528560af315d1f0a64d15fbcf93912d3d8e1d53d95d2dc. 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/QZDQH2396121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abc8e200b0ab311108db3d6d36c7258da932062faf677197b0a8be9e58ed563. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDQH2396122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a28c775f3cf12d832e6d39d297e5e8fb1225af46fd0dc2bf6951029fe1ed26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDQH2396124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d59b55358818aaaa566da70bc1589e2e3cde3b1b3bf080395a0f6ad4b65fd08. 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/QZDQH2396126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f8f56ff171c09de455920b6acf9b735bc4084424e5faf7a7ad047e3d480643. 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/QZDQH2392666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f543036fc9c30887118f0bbddcbfafc8ad6e3d7cd3889c71f37c563fdfefe16. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:51:00Z), 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/QZDQH2392672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b383d616ef47aadc1690ac870b0aebf9ef138311b83ef2bea726fb8f853281. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEP2054650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a1448d8c1ab579ebf509aeffeb694270d8022aad506354a19bd53a03ca83ff. 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/TCAEH1976891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1e50ecf1c6221051e706823e130a8eadc7b4b8744ee1167a2ac20a8db91558. 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/TCAEH1976908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2f97d2ef90b6acad7d1ac92365fb08e7aa93e863fb5fcea6f3d81bc65b0ba9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6DC1885352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109eac9b5c57df647bf6929b7f9d18ce1edbb90513e8f00dc0689020cf59856. 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/QM6DC1885358.
Desde el Cerro de la Silla Con Sabor a Sinaloa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfc9f6e31f2267d842808e224560ce6fc2d21d5178c5a8f05b5a19f73852baa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6DC1885339.
Punto Medio Popteño Banda y Los Hijos del Señor (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9174e797561ba7bc5e4a368b768c2e55daf2f9ecb5d04bc865a08378eb745924. 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/TCADR1885416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e7655d521b4078e6733cd331dd5b44c3d14c0269016fb8cae0da306baac57f. 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/TCADR1885419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45479e58afce55d0eff57bbbf41dd14c80fc0d21686e80cbca0a3e8cce5f37d1. 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/TCADS1807563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb05807dd183c36c65bc348bfcd5f06da3ce9e94bd24d1c81feb6d8d667dc7f. 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/TCADS1807601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a008b4aec7594684f1035b042e7467e7a47ea077b6a239944c654a85744b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADS1807749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fb41fc4a81a74240abf2721fbbb0c9b61424535d274c3741cc8afdd58414cc. 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/QZDQH2438735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e29bb9db7499f95e08d0f8824a0fdc0c063bfab8d0136007ae2e7295ed0f00. 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/QZDQH2421762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bdedaf737d2e5a71dbffc687cf484a6950935241e12fbde6ca6e8d68907e18. 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/QZDQH2411790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda9a3387c37b34d89a36705da655ffa3977e16728f65eac2f0b3e925eb0463e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZQMB2106065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7540080ce5b6a6f3bc1b9f6093dc67d7b70c38f25b5d750f08dbba7423559f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDQH2386962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec680a74672ebfa2be1fe031a27ae4651f536acd434e81ae8e66d9496a7dc9eb. 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/TCAGZ2398642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33adfd5596abede95299475ea3db52d2c8d2e188f43a5d3772d7b6b23c4e6678. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGW2342263.