Rifftera is a Finnish metal band formed in Vaasa in 2010. Their music is influenced especially by melodic death metal and thrash metal. Rifftera's debut album Pitch Black was released in 2015 and reac
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b85fa6772100f0498eb07d1bbec94a8bb9db2b1bc56dfee2155a52fe68dffbe. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cb9844e-0ee6-4f7c-b8d6-2bcb0940173b.json and https://artists.proofprofile.net/proofs/artist/9cb9844e-0ee6-4f7c-b8d6-2bcb0940173b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).