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 0xd50f3cdb6e4af7ea29a9b3d4357d7b59970beba979e5fad557a5b9c3cbc7d068. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c1486bd-150a-4dec-a611-6e63815e0d5f.json and https://artists.proofprofile.net/proofs/artist/0c1486bd-150a-4dec-a611-6e63815e0d5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Koohestan (Mountain)-Persian Barbat(Oud)Solo
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 0xed373ed02bc03e0e6ac541e70622540bb7a9afc4c837cc8970cd6785ea07e00b. 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/IRIRA1100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac5343229ee23bfb28f43bd6b96751f445c0460ea10574b783e303879cfd2b4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:33Z), 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/IRIRA1100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f767382cdf6325cce8caa9f18b39675dd9516728b301891e53759d18714386. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/IRIRA1100262.
From Stone Till Diamond (Az Sang Ta Almas) -Iranian Barbat(Oud) Solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad8807b4f0e67f5a41a02bc22aa77565a44aea570fe819c7a547c31e0637d4. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/IRIRA1100287.