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 0x0237dd11f8249a78be08e7904e54bcf4ed558ead2fcd965d50b1ba8acdb98304. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92dcb555-d8f1-4c8a-8e59-174050859881.json and https://artists.proofprofile.net/proofs/artist/92dcb555-d8f1-4c8a-8e59-174050859881.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Na Na Hey Hey, Kiss Him Goodbye - Radio Edit
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 0x2bff117e7109721557c9dab45d222bea62ce70d1c5c5338fa37da25df8b5cef1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:40Z), 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/ATB350800313.
Na Na Hey Hey, Kiss Him Goodbye - Lunatic Djs Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdbb8e946a9a9b09a745735ec86700001d9ee18369adbeeaddcce53f7e4c4c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:38Z), 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/ATB350900061.