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 0x1b97c8eda0244cb41581900acec30e405ec3e69a0495aa1bd7f1c95f1d8195f7. 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/b74ec11f-8c3a-412b-964b-3efc8ce1e77f.json and https://artists.proofprofile.net/proofs/artist/b74ec11f-8c3a-412b-964b-3efc8ce1e77f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Not the End of Your Story (Sunday Best Performance)
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 0x1d213591ca817d594441cdf19657ffb0bf1ddd72a317f266c103d9c8aac2c01f. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/USA5W1900394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff964504a90656c2b0d6279899c8bc727fb0981ef7c76da22686a38d6fb642a. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USA5W2000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac424573f5df57254f9e1a75ed7600a62762cc44ebd46b00937138c86b13c26. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USA5W2000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5bcc7eaa3e61c041a7168d5377e7ef8dd63f08fb814d4c813fdbe9673a56a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA5W2000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd482cd4b1ddfbe87b6e63dfc30ee18b5d236e298da676b77690e66b5d1250a39. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USA5W1900396.
The Blessing (feat. Maranda Curtis) [Song Session]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7418ae501b19e45c37cdbbcade6bb583999e886c520e5120a8855cbe9fdfa6d. 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/USA5W2200980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88865763b2d0b94ed3f3ca69eae0ed5f252c657600cc354295f3f250cd70be3. 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/USA5W2200977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a54b70b2cea4cd2f554c51a8b3bfe77a83a7a364f68e6788e40f94ae5d89e0. 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/USA5W2200978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d56aaab92da182071675857376f6b6ecd3c0bd605ec8043e9ca1340abf8f3c6. 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/USA5W2200979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7418ae501b19e45c37cdbbcade6bb583999e886c520e5120a8855cbe9fdfa6d. 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/USA5W2200980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833b440c26c8bd03756e42b95e87e3966d59a7191b140709f82b74d344adfc7b. 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/USA5W2200981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c5135c31b4846a1a5c0eb523a22947346caccd8ea8c73ce2f0bee851a58a49. 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/USA5W2200982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2ad13e4eaf28eb6e002e1f62fb4c5f46e905cf7aaefad158eae8de0554220e. 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/USA5W2200983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41cefc95f24321861f2a0500b9c9790ba1020568876caa0fab79ac7257a41d4. 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/USA5W2200984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16dd48edb3f51de2b4ab7bb876a977b217268c68389bfd58dc6b2e8bcdf7c75. 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/USA5W2200985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ddfbf3d331f155a1df68c8cac1f4f79a07a3d1a7a97c46f0a5102d4ba561e9. 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/USA5W2200986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9d2f91bf0d1b0b2c8fba0fb18815740f6cc279f1b717d40f9cfaf1b6e035b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA5W2200987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5fbb632e498fac4c82d475717268e1ea7e430192371160c4c2c8ee4ddb0a2d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USA5W2301017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb871f203a0cb005632a194d509929d63cffdafba816daf089bb395dc94c063b6. 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/USA5W2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed2fba8aa22d68474fe1c02deb0c1318f8f86946b4fcc2e48a68ccfb6feb0a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USA5W2400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bd55601d023d7b7ee9594f28b1d4bc2621e4cd947160ec52063992a7190dea. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USA5W2400264.
Too Good To Not Believe (feat. Lizzie Morgan, Cecily & Melvin Crispell III)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad640668a26135abf47924f3e8685effb923d16866fd932fe1656425736bc26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2206165.
Never Lost (feat. Joe L Barnes, Lizzie Morgan & Melvin Crispell III)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e55822cde40758d3f77cab2a386788dd3af8fccb23fd0b617bce097843f2ab. 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/QMDA62166217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e55822cde40758d3f77cab2a386788dd3af8fccb23fd0b617bce097843f2ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62166217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad640668a26135abf47924f3e8685effb923d16866fd932fe1656425736bc26. 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/QM4TX2206165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4c9a52cfb002e75a6b576265017103beae6b678293fa52344480c8637eb48a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ4E72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4c9a52cfb002e75a6b576265017103beae6b678293fa52344480c8637eb48a. 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/QZ4E72400001.