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 0x122407bfe27ed90272a8c121239d71a9b5407e0bed45d0e8a1dca047eb741e27. 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/2854efbf-29eb-44fb-8fa4-5e0c83247774.json and https://artists.proofprofile.net/proofs/artist/2854efbf-29eb-44fb-8fa4-5e0c83247774.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 0xf6055ea468be1052277c849fe451dbeb6c76137f7905cd1ed378ae1022003828. 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/ES7031326601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd98b13557d1c7ea2903ebea490d5dcf41efaa39c37decf6144e57dee1590f8d. 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/ES7031326604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eed547dd4d2e10c447356972826ee6b4217c56be03900de55296574fad1b65d. 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/ES7031326606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff30734939edd2b93bda376eaa918e36c75171403ef6a198b274d228feb7879. 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/ES7031025601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b53eda5c8a524b4bf245002a7fc3c8aa6ea297911d5ae1972f34541fb8f993. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES6060642207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a86effbd8e519a784b2cf5cba088967662831911ce54bf3477cf50564494eb. 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/ES6060331705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae415055a66d259b682bfb3bfddcb59b6ee1c1801494cca6fe2b588152e843f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES6069953001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4244344e04ef8fdd1f8fee27929034b62e64019d290403bf12ee4e58c8c462. 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/USA371078252.
Luceral Loves Subterfuge (Seleccionado Por Luceral)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e64dee054a29b8ed3dc737c388815fdeddabf0e800dc7446bc66e689cf0db0. 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/FR6V80702531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8240b158127a3a87a2fdf1b8ca11c07a9ddab6cd75beb919c588c8d107a9560d. 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/QM7282403412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb666055da8744104c3ac63682797aac2f4071892ab9891eab48ed19102990892. 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/QM7282403413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b7e58fba3435dc3339bfe695a9002571183619324c1ad46aa43c84b67575a2. 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/QM7282403415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35503a2fec5f42180e10b8cac22c05c26d1e94eb19430d3141ff67101cc0b718. 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/QM7282403416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da94a729040eadcaca82a14a5ff3288720a73d080e5ea156377d2c009c78658. 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/QM7282403417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ccab54db065f4e31b01e2417933d83c36a568c8db7ab1e366ea0cf6b3dc9c8. 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/QM7282403418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6b834b79c1224258fe65c4425364fe90fdf61239271aa0089b62cdb9fa7091. 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/QM4TW2544632.