BPMD is an American hard rock/heavy metal supergroup. Formed in 2019, the band plays cover songs of classic American rock bands of the 1970s. The band consists of Overkill singer Bobby "Blitz" Ellswor
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 0x2961eb1d81e559308edc2d54967e159c66f8e0e7a677d9088e098014eba2e0b6. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fefe804-1817-4ee1-99ef-63fad57196b6.json and https://artists.proofprofile.net/proofs/artist/2fefe804-1817-4ee1-99ef-63fad57196b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).