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 0x0d123ba5956057087d78e2dc50a82b966b0ac32f029545603cef4868625a7933. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a3ab509-7169-4749-b229-957fc595732c.json and https://artists.proofprofile.net/proofs/artist/2a3ab509-7169-4749-b229-957fc595732c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Un regal de muzică folclorică tradițională
Un Regal De Muzică Folclorică Tradițională, Vol. 1
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 0x3f4beba15506880af287dc76e4a7d296042fe9b9232768a7173f8e4c96cd4377. 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/ROB011120517.
Cinci veacuri din istoria cântecului popular românesc Vol. III
Cinci Veacuri Din Istoria Cântecului Popular Românesc, Vol. IV (1540-2011)
Cinci veacuri din istoria cântecului popular românesc Vol. I
Cinci Veacuri Din Istoria Cântecului Popular Românesc, Vol. III (1540-2011)
Cinci veacuri din istoria cântecului popular românesc Vol. V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f21dc36cd72feae739a1e310d1dc536df7aa9dd3f5e85df399a33f93161df4f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ROB011669579.
Cinci Veacuri Din Istoria Cântecului Popular Românesc, Vol. V (1540-2011)
Cinci Veacuri Din Istoria Cântecului Popular Românesc Vol. I (1540-2011)
Cinci Veacuri Din Istoria Cântecului Popular Românesc, Vol. II (1540-2011)
Cinci veacuri din istoria cântecului popular românesc Vol. II
Cinci veacuri din istoria cântecului popular românesc Vol. IV