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 0xf87d7da59201f78567316d67ead95d80ea4da77afe802454cde6d548846734f6. 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/5c806861-acee-4475-a879-2c1677ebde3a.json and https://artists.proofprofile.net/proofs/artist/5c806861-acee-4475-a879-2c1677ebde3a.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 0x9cf2d37112f98bff717902cf4d645b0f74a86806f76ec0425d3198df7de631c6. 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/USSD19500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc2716696baf8b8d38e8fbd5359f044f530b47c2df5694c9ccae0e5e2a425bd. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/USSD10204123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2587d37f84b9780324fe66cf26c7860eac5a81db8eb009a4aade1747b671ba04. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USSD10204127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d0b70dbe98a96e12430903abb16237ae87414645e1bda5f94d9c71d3148bef. 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/USSD10304150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec3bde774dc7888a4a34e4b54c12d60913ee0c3899d6dfbeadc6c6ecbfecd57. 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/USSD10304148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773562bc88836d612e3db6169c99d931608836a960933c55723d9845d217aceb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USSD10005088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7998cd764b1519ab4e9808287e0082130a945b10d90969f3305dedc1b5ea1c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USSD19602003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74d14b359b8205880eeec7f3fd9ab61a69a251c0b9d39e7d2905d2f2485dca0. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USSD19604001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda932a9b4ed9b579c7a46357a96e12c1376547aa512470e3dd2e37072861b49. 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/USSD19700617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306ca3646384621142dedd8d2d3a2faa56e25b9a528be5876b41afad3536bd9a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSD19700619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad5420a4beb1e54b9b360e1f290f9ad5f62f28777129f86cbe9af88c5c4b4c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USSD19700623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253f46e92f53021859f7f0fdd68d1896fab1b6308fc4b8f5bdd998763b92ef1f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USSD19700630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bd83a273ce5e58de61e9b690a031f8a1bd58b1cabbeb7f68dbe333d792c64e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSD10204133.
Eddie Gonzalez Performs Los Fantasmas del Caribe - El Reencuentro de Éxitos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9402dea4aff494e9aca12e2c61131d27d0f15443ae91da7d7053b5914baf21. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USDY41808655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93bdb08570d4f53cec06729444c9d3a529a9fbfa63e9b3681bb95e8a4dbb55. 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/MX2971601239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab22684e515c598bd36c351039ed0efd495f8c6a7a8fd9420319c11e174b1ee7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USSD10304155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8ee0b256d04c893ecbf58e13e9b716104fdc8374b3fa68daf1ca44604b3bcd. 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/QM7281435106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa31c09b15695a03759eb0a364e0fd1b1726866b5fc296a21b44e25833f4f9fb. 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/QM7281435110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda932a9b4ed9b579c7a46357a96e12c1376547aa512470e3dd2e37072861b49. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USSD19700617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809246a98525b17419cb3e87fc9b58e5886496e62e147d0b775815ab16250b82. 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/MX2972001988.