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 0xac319f93233c06246085acca95af1da8ade7f4eb6b2f5e18b636a66bcb535f03. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/031b1b68-10ca-4a48-90b4-d992f4243a58.json and https://artists.proofprofile.net/proofs/artist/031b1b68-10ca-4a48-90b4-d992f4243a58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frios recuerdos (Jacker - Samurai efx - Amrak - Dj Folder)
Sulla cattiva strada - (Jacker - Avlas - Amrak - Dowin rap)
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 0x193baeee321c7c120a181f41749fbfb5c1c9fdf679ad9a254bd5764895d5f8ce. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:47Z), 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/QZTB62490998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0ee589057a837969a13d9faf70b644f967915a10ed68e867382a3058cfc713. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITZB42564566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd215fc4985a4e8c2cd87bfeb5210d6cde63cb8808e0b9644897836bf278fe75a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:38:00Z), 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/QZNWV2549021.