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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad12650bbf5d4e86b02f03413eef2c4fd6cc1a068b54cb2829921710350b5c4d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4f90f42-be6e-42b4-a167-b2b900f52794.json and https://artists.proofprofile.net/proofs/artist/a4f90f42-be6e-42b4-a167-b2b900f52794.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe333364605b9043c2fe00b9338642069d4f6486e8d0bf2470113cc78612cf6c3. 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/SE5BU2135946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a2bc5da2dd753808c823124452ae47115007e0e8add39e60c4fbce846b399. 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/SE5BU2135947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0f5fefd6b7813d4826fe6aae79b5cee17534892941a31b664e8dc89082b93c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZXLZ2305558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154e9da4dddef8c827b29e2f36c4b9302eed88de68c0548baeef365c16f096aa. 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/CAQOI2511253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b7f8e2882410179e4913ce41605fbea7390fbf7e8e83e39e5d3aedbfaa614f. 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/BK4DA2401914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab33b57d37a7dcfcb5da20985464b1a577416753b0a0407a319dc85045719426. 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/BK4DA2215125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d3eef3745a5610b753e638f549931ebce5e49b19b4340892c5225eabc9340f. 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/BK4DA2215126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0850d25f8b72f0be1b2da36bfb3ed0ca10936fdb2ac4387f97226ad0103223. 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/BK4DA2215127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4702cebf0b116cd1afb221c3cbc364c5a6b01c752b81dd665462ea05cc140c2. 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/BK4DA2215128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826873cd552e64bb9414966a50eaa90a549e566deebf7070a67697a15c4cf5dc. 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/BK4DA2215129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e142bd77d772c4da0de5f215122cd783c88f92707ee96579eb0b4466d1a80c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2215130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4296de5171a061a9bc4ca6909df761f0ef902e4763de7825c20146b54df48. 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/BK4DA2215131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551877e0727dfa3b7265eb1ce0ec8f6ca3e3871235acfa082604661f47e9ba23. 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/BK4DA2215133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b34940b49e7dfc33dc11f62cdb9c08c16110830e811236528e89c0d4e7717. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2215134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bbce1a3f6cd750dfd2a579203add64d1cc2191d05b944176d3e2bc66eca377. 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/BK4DA2215135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5280a4f632265756b30833fcb936c8d3b0a4af77e0f077e8fc4c0bcda8cbf557. 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/BK4DA2215137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e774cdec611708cad9c952db87b76c93d9ca0378f7ce79967409e4a1cd2912c. 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/BK4DA2215138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4579439aa369a7eb382e8070746893c4cf34e57d7d7a99191ee0a769c348223e. 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/BK4DA2215141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65081c3eea5e59db70bfcd1e0e9b92f6c1a2214a610e1f5ae622087919fd4b30. 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/QZNJV2167300.
Make It Rain (feat. Big Trucone & King Romex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389dce2b9eec9fea92ecc2a514271c5aa11fcd1c9f52ab594b8fe7f3de5070c6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DELJ81610077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72f39edf6444987d59e351aac997901f481e37a324a9aa7e62539d25c2f2486. 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/BK4DA2308005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4702cebf0b116cd1afb221c3cbc364c5a6b01c752b81dd665462ea05cc140c2. 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/BK4DA2215128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ce344b684f370ccd7b0abf2da4fe031438db57dcfb713043c672f738f1b062. 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/QZW9L2210043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae9a25bc80c998743b2f7bf86c253a9f57920b5bafd7b55a15fbbab1df10389. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNJZ2101708.
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