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 0x6e3bb6e74639524ed5b715724ee768d66f0b252f4470664a1cb4d4b32589b878. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e28672bc-1d4c-4dcd-b10f-f4cfb017683e.json and https://artists.proofprofile.net/proofs/artist/e28672bc-1d4c-4dcd-b10f-f4cfb017683e.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 0x8f3b0bebc0761eb8164b85578c12d833d2c26f994f2bd297b4698d6196ed6117. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZDA51913493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8788179372c9d6743c4df4c6feabf0f74a6ee26fce7dd5fb85d1a825439bc2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:39Z), 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/QZDA51913494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc7d9628728476773c8c40644d877d65114b6dc76fee8ec6f2db07bfe8a5aea. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:23Z), 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/QZDA51913495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113102b6f12ae4b9c45deae006e5abfeb42318465a527b7b1028984f4d998df6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA51913499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46919feae3cf6766708227ff11881b9e7d8ab5334fad826dca50babb121bc4dd. 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/QZDA51913500.
TIE (live la Teatrul National Bucuresti)
Padurea de Ganduri (Dysthymia) [Live la TNB]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff767611d99791d13dc53f730d576b38fcf1a535a94aec4e064daa7e57747df7. 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/QZFZ72130904.