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 0x502f2d92bf79af56795532a54e01cc5d953a23561f143fbb87b9db566f8cd212. 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/6eccaecf-22c2-4ff3-afd3-a735819916e0.json and https://artists.proofprofile.net/proofs/artist/6eccaecf-22c2-4ff3-afd3-a735819916e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Meho Puzić Uz Orkestar "Fenix" Perice Simonovića
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 0xc2246bcd10579f4fb3ba934353ce76389389d813363d199d6f30cc851eac21bd. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/BAA052009688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a255d897cf0de5dd9972040a7e87af636900aee21aec42af89b9355b7983b29. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/BAA052009690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ab77e7292ff3d8ddb7e29ced89b380b3f515f15707b0e50c06e9430d854b48. 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/USA560685178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82f4b70258a505fcf5e3afe94fd988d2dece17930405e8b719b4cf17e9f12f1. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/USA560685187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a21430a218b7a1f021338ce0f9d81ac955c78f57a7c484c469431bef1f79805. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HRA047751995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b0a4ae805a440325a09c1f4c5fd10a1a98d3938929cca34096a42b29bab70f. 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/HRA049022395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf471dfb56834b76720a454be8dd320cc2b0eddcfa22a908469ecc114a2f11d12. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/HRA049022400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a55ec34a28797fb2f6de0e95d9973582043d34a4e01f6c6a7dd0e498be29797. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/HRA047438937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d2079227455616c0e66e1706047a315f23763e0760515f125fe21cdd1b5c80. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/HRA049022401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6163e4c2dbe7e34fafed30496924afd226f3cd59ae223087dc2ba53a1da3b1. 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/HRA047151693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847b34c549acb28acbcf2c946092ac859b0965da9b708bea18b95dfefe2dcc52. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/HRA049022402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245ba73688749fa680f59ad7d7e38faafd0a4ce81970348c7e213cb98e7eafc6. 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/HRA048920710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152bec361bdbce2d99c3ad2d9accb999d5bfcf8fb280a856996c27a46251ad2d. 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/HRA048452206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed0d97ad6dfc0aaa097497a014b739a0c4504e3607da6ebda52dde8d24ea76b. 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/HRA040627328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4df6e94d578a7b339a4b298987f658d189ecdd6a228acb440f11c9f20c4b2b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HRA047151687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccba48675d9a369ca7bf924f0c9ee4caaa93e4f802667edec49d5f23f8b5692. 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/HRA047851989.
Meho Puzić Uz Orkestar ''Fenix'' Perice Simonovića
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a10a5e1867bde5a7777e35fd2caf8843a99f66d8f691bc2ad0c8a0d7245a5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HRA041475117.