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 0x85ddf93c77c3b8efb554a7142bdab6b72dec9b9fff42ef27dd90d57457b314ca. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d10345c4-b581-472f-a76d-27ec9e291323.json and https://artists.proofprofile.net/proofs/artist/d10345c4-b581-472f-a76d-27ec9e291323.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 0x678c4a0fa1ecbea563b5d839d301a7528334fc2673e6dba5c69c8504f441d2eb. 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/QZHN92064299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03257426ab2eb8883caeab03668eb3b7b0b4942fee83761f354bdc7f87a295ea. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNWX2127527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ae411f6888535d07fce4dc5c06ecdd715930ff49eec8830e3ad883756977e5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN32269443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12037e099dcc6d9e323d737bcb535d57f42cff33e9d7e259e811efcbebb2ad8e. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZHN32269446.
100 Χρόνια Ατρόμητος (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d157fb69d6905d3c6e8f2c871156d8a02060a7abe233dc0e051061e37785f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QT3F22473303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699b87ef53c4095bde0e7f275079d6845f76e8530d3252c7a9ec7ac23c1578c7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:10:39Z), 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/QT3F22473304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e711c121d0d13e866b51fd4ad5c7ca607874650cdca421464aff00885c6b01. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:08Z), 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/QT3F22473306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81980af585ab5bd95059c2350fd9798b49f9ac862b9ba3e2d28a7fc082fc36a7. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:36:49Z), 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/QT3F22473307.