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 0xf7f5a21e866c28808c6553865a55ef7fe5968a476f1cff3e2cc443d8dfddf177. 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/251e1367-23df-4ef7-a9f2-5e6a565f4df6.json and https://artists.proofprofile.net/proofs/artist/251e1367-23df-4ef7-a9f2-5e6a565f4df6.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 0xfc0a7d42ad26674cd6a346b3bf9d3a229199ca372e375b56fbbf0fa932eb0255. 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/USDJ29905219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1660a4b0008313277e0c3626cd8ab6d8bb2af5ac643513bb331baa51e2ff8cb0. 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/USDJ29905222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf168a11146c7b48801dae054eabf14e63dc687855d0a1d10bc7ebac893507565. 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/USDJ29905216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e92d0bff28edfbd195bcae4184768388ff63f2c821713585f7e9199e3f339a1. 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/USDJ29906202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec37ef3a3b517e42c2863c02cc1f28873c9cbe1a386d382b6c97c2f603f3b32d. 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/USDJ29905213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01af93aa3820c4e8e1f64d8c33b84cd884645c9f1fe0cafb1794597683edcee6. 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/USDJ29905221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40032ccd41cf891924338da1c7aa3620a3a1cdaded392cd949b8b689ca50015b. 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/USDJ29905217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a197a6e91085bab4488cbb109d81383c0ed01cf4ca1940e6a6ab3076b4bcd5. 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/USDJ29905218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fac0dea30ef65d5f4892a3c52c022da993fa3f19b8b4ccdb35d25f46f82712. 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/USDJ29905215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6221676e51da59bba27b5339062e254f76ee2e846b842869455804a49f652126. 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/USDJ29905210.
Dru World Order - Interlude / Dedicated To Dru Hill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca940f3e22627fd924b1d0a3d945677fea3ed849f23634040f6c169823a940d5. 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/USDJ29905200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ea4661a2a7d88077b64cf5012a9831d221cdf6290a7e0bc62e94e23a69488. 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/USDJ29905212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5245f92c6e9fef84a6fe6c64054d0c2e12a144a1a6b6cd8502095ad45dd2b64. 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/USDJ29905220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3599630c89e967a41412d925f8ea2e3d593e699343c6161a3301d68aee4c6807. 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/USAT22202964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0a7d42ad26674cd6a346b3bf9d3a229199ca372e375b56fbbf0fa932eb0255. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USDJ29905219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a197a6e91085bab4488cbb109d81383c0ed01cf4ca1940e6a6ab3076b4bcd5. 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/USDJ29905218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5353b510e158589c9d7053f03d570492ffa580b68b2c00dea1b3251e188df9bc. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMDA61356879.