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 0xa49720a632dfb33dba612d9ab73653345c9624631bb093513c994f39abacfef4. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd3116d0-1f02-4b12-9a75-f92ed34e3546.json and https://artists.proofprofile.net/proofs/artist/dd3116d0-1f02-4b12-9a75-f92ed34e3546.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
This Girl Is on Fire - The Radio Mixes (Tribute to Alicia Keys)
Don't You Worry Child - Heaven's Got a Plan for You (Tribute to Swedish House Mafia)
I Knew You Were Trouble - The Radio Mixes (Tribute to Taylor Swift)
Radio 2013 (Clean & Mean Re-Mix Versions)
Twenty Dollars in My Pocket (The Radio Mixes)
I'm Gonna Pop Some Tags (The Radio Mixes)
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 0x1246843a4c4b42b2021bd88ba831faa9264ace2a610bb7e46b782127c7f15017. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCABT1473649.