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 0xd7373f96d3f5ef579c0503e413534573bf3a9cddb4e913b06ecf736334124e45. 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/9e5fece0-d0bc-41bb-8101-81b6a44ce562.json and https://artists.proofprofile.net/proofs/artist/9e5fece0-d0bc-41bb-8101-81b6a44ce562.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 0x73a0fa7def4f9afc71c6feadd66a09b3a7d83de5eff4c0614fb4517cf09398b6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:34:38Z), 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/USV291433180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1416aeeb1a3140d941824f01ff601cfebb56648ca1da5a8988ee0eb5327c4a14. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:45Z), 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/USV291433181.
Jy's Weer Gesuip - Jerbes Die Leeuboer Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b899767daaa302c837461b845f537caa77f62873d1d53af10c3a635806c66e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USV291433187.
Plaasdorp (Gesing deur Piet Pompies) - Piet Pompies Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafa8925b5c5ec595c3235c445441f4e8062e74ac7741463128668c7d262fc57. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/USV291433194.
Suikerbossie / Oukraalliedjie / More Oompie More Tannie / So lank as die rietjie in die water lê / Daar Kom die Alibama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6747c682f735d292ea048592b404ec6f162a9daa1234a93ba763129cae3311. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USV291429405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cf15baa996ae3bf1cbcdf0ab7ae79b694977d67714487b6d3dab1151b59d10. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USV291438092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581dbb6d7d32928403548ce5afeeb144a525997c26773214a08d5c68a1f400d8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USV291438096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9428e31a793b73e8feaf1cddae26898083b1cbbcdcdd2bd875f3fb4bd217a6e7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:27:20Z), 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/USV291438097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5a4717ede8e413889200f4f1febdb8c495e498f1858760e4db3bab23b75caf. 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/USV291445775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6434748d43b23e303f73d9e971583621b3633d4334d2ef5b401d41bd2a8d09d5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USV291445922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03d18719fb60c60337390957af7586e71bdebbbf4a643b6082a41ea001f5a1. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/USV291445926.