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 0x46324f8093aa2ff19f802e4d9be993f25e29664bdc720d574bcc5788aa15e59a. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e28600ef-50d3-4af5-a31b-4dc42b03fc6f.json and https://artists.proofprofile.net/proofs/artist/e28600ef-50d3-4af5-a31b-4dc42b03fc6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Festen (Live på Rinkebyfestivalen, Rinkeby, 1984)
Rymmen (Live på Rinkebyfestivalen, Rinkeby, 1984)
1000 år och en natt (Live på Rinkebyfestivalen, Rinkeby, 1984)
Nu e sista ölen tömd (Live på Rinkebyfestivalen, Rinkeby, 1984)
Skymning (Live på Rinkebyfestivalen, Rinkeby, 1984)
Liv (Live på Rinkebyfestivalen, Rinkeby, 1984)
Liv - Live på Rinkebyfestivalen, Rinkeby, 1984
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 0xb90218628614f4094df425c3ab2d2f8a899d5c5a20f2858bbbb13143a673bc36. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:22:14Z), 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/SEVVM0501201.