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 0x7210882cd3678551992e35a4ed70450208baff72ac075fa511aaed63d1077668. 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/547199ca-00c8-4858-8580-3e895db5429f.json and https://artists.proofprofile.net/proofs/artist/547199ca-00c8-4858-8580-3e895db5429f.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 0x3044e5857c48645c9b84073978f7ff76b9b26e924d5898ca00d510868401d76c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYM120500726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852cf1476e04751ab56a18ea565224a67b0ea412866113e369e5a8cd1d5f9fa8. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/UYM120500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee96c599198b60e34cf5e73066bb697744ae8925c34f1663cc34b823a3a96b4. 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/UYM120600575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7902a584ae95735a957841f53c16c9ac0f5a029e63be3a7f8b7c7e794a58ef73. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UYM120600581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3b44e9cf4c8973d3b2afc814ed8933436b029f87eb894098919283fc7cad35. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UYM121705792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0457d32f1fb50ca5596304e663fb66e281bd634b1088b6b213a0f3258b55bf06. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UYM121705791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1c9c4a151e4545b16d97f0754826a2b653534e84529654d02cd4856b5c1cc5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UYM122105030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9742d5568d4ccf6078eb58f1da0a244be5f98a84f13cadd9b63e873e5fabbc8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UYM122104525.
Luna Negra (En Vivo Noche De Gala Tropical)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558776691e18213431b41ff5ad07851c205951e92ed72d5464638f8be29145f3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/UYM122400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920dc8ca28e9889d9b4c786e4ee41cf6b6582a9e32ceb749fbdfc5aab8069a73. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/UYM122401728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b6debcd48a6ef829e33bb489e28531ff4c5fcffe6aca762a01a9ac37706a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UYM122401934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cffe6ec5a75b7f5bf5e2595e99f29463fa09fa9600dddc620ac498d8b9aeab. 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/UYM122500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb742817a07737378daf65d44c1f20dbafaa9bff440d4cc1897608200515376. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UYM122500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d837af310bb9d1435c28bebd9cb2b7503e558e7633f7dc342447058ebebf38. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UYM122500638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f09bb6285c0a5d2fb0b1342f21a809c4c85a8266b3856c7bfcc0a5b7a993083. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/UYM122500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23a042198e555fc2b24faf1ecdf5f06c1f5c351040d17a63414c450d8fd320a. 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/UYM120901105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68354183c92d2484d1dd28928795f9ad0943df4ae523c81c0c1e019d079e1e87. 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/UYM121101599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24348a4abe6d93c2a9fe761229868d68b1e8d26065d9548e45ee682d036ea5c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/UYM122105340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a7514c3ce8a32939c0ccd349f5ae4b6e397572c506b2a49dd87035ba151fbc. 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/UYM121201146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6066515456ea42bba28062b06c13de85b8a84b87de852cdbacbac441b653d850. 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/UYM122003240.