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 0x6cbf908d752d251193c608674aa4ae2161f0a0a6bb966e996a5e363c66d68d79. 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/e5fd4f88-19ca-4883-b6fa-470a06daeaba.json and https://artists.proofprofile.net/proofs/artist/e5fd4f88-19ca-4883-b6fa-470a06daeaba.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 0x8a5846cb1c849233b9b4ffc0f5decc47c6aa69300d32d707aab2cd61c1eb90c4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:18:34Z), 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/US3DF1940315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d809fa7d1fb3a54e763a1e7a779e0ce879e1fc00d95e50bc1e4eeca276b07a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:19Z), 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/GBSMU1762373.
El Corrido De Marco Sanchez - El Volvera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd222b0e14be86036afd92a8a376c7de8c58cdf6d72de44072e50c8095fa08cc7. 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/GBSMU1762379.
La Niña De Tus Ojos (Especial Duranguenze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d01646f63847ed45d1e0a815e80dfd10c3b71580403e3e601c391f221fc479. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US3DF1808158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53874f0c988c3f1816875c53856968955ffcf872e8d3876ee31984bdc87e5ff3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:10:04Z), 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/US3DF1808163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74648ae5cab214d8c4778ee97920a6b2a9821268bad324e8b0835f7265f8d62. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US3DF1808168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18792f4a83453554a54a64bf68bc30d4a79057ace5d200b805696746642a8df6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US3DF1817779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80322e82b4394633ca4035f1a02a42e60b1350ce4770df171d2259fd90efe510. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:03:40Z), 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/US3DF1940300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a563943460752863a97dc840356686739aa3ab37dd0c3dc182319fa66ba76d8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:16:54Z), 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/US3DF1940304.
Yo le Alabo de Corazón (Colección de éxitos)