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 0x57b63425e38842df5f76a0b69064cdf6d00374c10ec5f08b407d33de93215f0d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e560efe-dacb-469d-bbb2-0e54484b4cac.json and https://artists.proofprofile.net/proofs/artist/7e560efe-dacb-469d-bbb2-0e54484b4cac.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 0x6a42ca086be6f4cc24cad1af2e9f400104cf742c0e882034a6ca098c1a9977d4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:24Z), 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/FR2X42332287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72add960ae52d5b197aeecec6e149a1f70ffe4e38a53bc2d21ffef9a3a236f1e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA092219478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949a8e02928d73c9a59cb3f531284e6dcde6e70695191caa0b381ccb5686bae2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S2320768.
Nar Ağacı / Ay Gedən Oğlan / Alda Birdi / Naz Eyləyir / Bu Leyli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2033d858e4a71a64bb992601dee505c23f6373e49fa6fd7b4e8218d0ef74630. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:55Z), 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/FR10S2336780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be8e8c4a85058b1f80bfcf23196108cdc6f0452222dc4fa886ff50976392181. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:38Z), 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/FR10S2351528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44229b848a61ab5804e033f64300c7d09245d3e16d35e8a3b53f8d1a4e2c028. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR10S2463647.