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 0x65d182ddef5c3e9924253d93680a9d810a1cfdb2a4aa46becaf130acb10b65c1. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0314859-affc-45be-9ebd-664bf06fdd73.json and https://artists.proofprofile.net/proofs/artist/c0314859-affc-45be-9ebd-664bf06fdd73.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 0x2701345eead74a7fecda88ee6ba8d3a2f013c7fb9174872f365d7d0c269387e5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHMD2028003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b72d060bdf65d1ff20d283f71071070e1306ed515fbf928fd6994029b153670. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHMD2028914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42947947e7aae6cac7dd6fb776f53515bf90af99261c2abfcfb8dcb5d6d66830. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHMD2028919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7a1b92bc8b24528fd2026559b0df2e8c0b366445454dd5dc53e6ad05a9a4bc. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USHMD2028920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32afc00b3aa3be7f1b2cd32e971688a5ac456beabe58ee091f4e0ce3dd70e319. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHMD2028921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d52d8cd9258200ed969529ca1c608f2a5b671e69e63735414c69be6163b044. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USHMD2028924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d2b372f1bd9ebbf5c96e376b9af35613b465e9156c59f57a2ec74b88a07c7a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHMD2028928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8a2ebb8bc39b7e52713f47b723dc1c2e184245aac9fa5e18cdda4e3825cde2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHMD2028929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3e5f590e6a28e8aad13d8d3405664ff81d7cf8dbc5a92d770b48bdf3e1c41. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHMD2028930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961274616b761e150a030ee3f6604e6a0d2b4d542df73ebbfe7ce290fbf786c8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHMD2028931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daecdd02511945220b639e75b30b9a29253dd6e09f39745e898d4cbb70d9877. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHMD2332601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476deb90c74936fdad863f02dc77903cf80ea5549b20e9932bba45f13fdc11f7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USHMD2332605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9458590e2ed71ef068c49785e1758ee13de74520f2276e339ff6ad101cbf0458. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHMD2230601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2353d3c6d6a5be2d513c79cceb551efe14da81cb89bae6b0f1758f35446e16b0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHMD2230602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4657c23c836f61164107d570306a442f3bc04388fac1c91d6d92f7947ec5721a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHMD2230603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214367e7cdbeb935653b00a0475077e318c364767b1eea7dd0df914052a8120f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHMD2128301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fbece93dfd6b0949f4636ba1b6cc3138310a6215036171a846d4dd73dade67. 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/USHMD2128302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba68bceced35ff245ae856d40c384f0951decd1726a761e5a4267a0c70c562. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHMD2128303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53060536a85a63e3bba79dc07784d824b7a9a4c7accf51b95584ee2faa1c7218. 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/USHMD2128304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9846e90c064c1caad7c28207ad46888cbd85972a0dd51bb4142b5d146c67100f. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USHMD2128305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ab00e272ebcaf9d19972a268e11865784dd6725a79d6a5ffc1bf3a5f60a54. 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/USHMD2128306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68980c93074e38827187f6993e6b5edf7ca488a689da13b7f9d59ca38bc3b5e. 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/QZDA41904785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38172243003ab19bfc64518b61343b0302928552049e49b14540f17a92549a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZDA41904787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570c18862966cd9337c5740d99b37fa148cbace0d66192858b5f097991be8f59. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA41904788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca2b5c0a8bc4901e9abee8cd29f065f60f93f350929abdd0807bf931a0c76ad. 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/QZDA41904789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745f144edee4f965ce4be7eb79f836203373169ef02e6e347d37773af9ad883. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA41904790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d26fb40202241c50c4f445902c7b7f088f9b7d82a2fd5b5824b21dcd4ac156. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA41904792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6a763c2125569b36f06cceb80100f334645ffc3ecaaa38ecc25fc4e8f4c737. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA41904793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476deb90c74936fdad863f02dc77903cf80ea5549b20e9932bba45f13fdc11f7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHMD2332605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fd7be09a380d27a49b53f217dd0de9be9d3d0be6548b205abf5f0d094be695. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZFZ42246023.
A Prayer For The Departed (Soul In Heaven Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa315ed792266ccfba2f7e1661bca029f945159e176397decff5a0019cb23ce47. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USHMD2433004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1510c2568ddbdce584a36007c8c1c862dafaf69cc2e06802438590aecb4292f8. 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/USHMD2433009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef7d91e8ac7e3894ff7ae46122cc1a9dc81dd43b3aa66af4294fd68d424087a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHMD2433010.