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 0x3d0f43578d09ab4c312fd65574c2a21fd2daf81cc5e50b1bdc94d3c154e9ffc3. 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/41a8be65-83b7-436e-ae0d-8fa43d418d8c.json and https://artists.proofprofile.net/proofs/artist/41a8be65-83b7-436e-ae0d-8fa43d418d8c.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 0x0f5f54cb19ed687a08394699b71ef97e85fe58ac575cc0029912762c54662327. 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/QZNWR2339790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ada7e817af1a0ad16defe5a5ef7988d49a45ef334bb1f7c605cd698dd1818. 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/QZHNC2357239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76713641ba3a71dba90c5bba63d282503e1f90b4a881a1e817db9f2be79521da. 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/QZHNC2357241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d06ae162c25bc8d493e98435e0a6f1fc95a427f75417d1ae0d2fcfca60886ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:23:49Z), 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/QZTB42226359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa571dba3cb067b8dd965cd7de5324e077de496db19955b92fb29c34458e8b8fb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:01Z), 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/QZTB42226362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b7d2154d288e27901b5c733c3a7015bb468a16a85b055cf2a091aa56977838. 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/QZTB42226365.
Popurri (Mis Tres Annimales, Suena La Banda, Las Heladas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7aa54e780095af12b6ebc29c89beefd5d1a8208b06cff80008901c59666c8f. 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/QZTB42226368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98008a42bf647eac241cbc7463f59c1ac7ada3282542dbdd4366a9e1327fe3b8. 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/QZES52096732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda239a3352e48d662ed4d1ee94e86c0cf2028f930d576398707acaf1f44cf480. 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/QZTB72375905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76701169131aba96588ac38cd879836c41ac5e41abd5d8cb5aa03f5507fa1d6a. 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/QZMEP2332364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e204deccc4c7bd796e975744ddbb568a0ddae3f46c6f6bf86272019dbcd3cb. 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/QZTAU2202286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c53e8fce91150ef9d060c5bcf3b190aadb2288ba390421ce45622fc3b5a04e. 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/QZTAU2262416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2c48ebc8883df03e7520404e444444687a68c6306b2a72d51ac059a8998e0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNWR2254177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba34cea65a832e8f8d9e355950cab17062a612426e043772ba5ccfbe04a9bd5. 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/QZNWR2239444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc1b49c5262a2fe74c91215d4581868c92093fe26d3d8adcaaccc25e053a89c. 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/QZMEN2186060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf4778ec5c49d5fda270c6700e3e132875581586c84a013a08d013336d8f061. 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/QZDA82146831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd689a5fb31ec2c36fcd003f5f3de2b9e3f265e1daf303973d1632cc761b1f621. 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/QZDA82146832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef6828cf03aaa12d47da8b3fb5fc297c2202cfa16a8717db9dcfaade49c1f5. 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/QZDA82146833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d7adba677269b11a09510519493c3492967012002b6e29afd2d083841508a8. 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/QZDA82146834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a490ae98b6b7d6ce6201548e57a5ce42a6d3a18d454bdff5b594c0b418eae6c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDA82146835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6846a2297e1669747132937031c30179d59d1f8599a64eb2b66309644d41959f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:29Z), 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/QZFZ32116909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164d6b9cbf4181c85445aeb3322ed1b17332036366ef42d0b004fa74ddcc75dc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:05:58Z), 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/QZFYX2109725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46a8ef897952319da93573028a822cee08e9cbb3cc2c7e79f5d737c492e6afe. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:45Z), 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/QZK6H2075210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853c960dfae63ab0f70e0da67c108a073de9c9adbd584e5865e1e7284bee9bf1. 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/QZDA62091342.