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 0x80d3b75638358b79bc8426bf38fe03ce7d1a7dae044bffafac47df0927c86235. 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/8e8ed2ca-26b0-4ac0-80e9-e5fbbecd1bfc.json and https://artists.proofprofile.net/proofs/artist/8e8ed2ca-26b0-4ac0-80e9-e5fbbecd1bfc.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 0xb683a093fb4b5b72c60b5296db8687ad34a4839ab56bdb4dc8d796488bf69e57. 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/UKXN22187487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3198c59c59c7b41bfd2bcaad88fc095ca5cec657424a01c363826e1c937fbff. 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/GBLFP2258528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2d4d1b96a113be7549054f3f041e69fbbff74092c3bd387144108452e2a8a7. 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/UKXN22208250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3198c59c59c7b41bfd2bcaad88fc095ca5cec657424a01c363826e1c937fbff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLFP2258528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cae1540f0a151d7d23ab5c84b7fc5c733d3a591da39067e01a6f5082a3bddf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA21917054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ca08a465fad576d5106afcb22766d68b6b3167bb2576bf91ab3604830f142d. 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/GBLFP2301303.
Delasierra y Los Ministros del Rocksteady
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aabfdd51c2a0fe30f67e9bd39dcb4c87f0c1e42337396056a2db8ef3f18398. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLFP2422239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6547e16d6b0da6f5c804268eb4e71e669a280b997af5d303b1f5178f93c40. 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/GBLFP2470418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d19f4cb14812bf29710748da58873096618e91eec0e89e232210cd0d8bf3ec8. 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/GX3Q92483543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baa868a60ab65f5cf5f32aa54ac8f0bb5bc650fdcc72cc3d6efd4dd1dd015b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBMA22427279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83b459839237b36c65bb0de760687722948afafb49b0a28f17707e6b5d77973. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBMA22369692.
DELASIERRA EN EL TEATRO MAYOR JMSD (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ac8cded3a1cbcef4680021af8ccf8184cd730d83b8019945cb03cb3c4a296a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GX53U2572784.