Donald Cumming (born July 31, 1981) is an American actor, musician, singer and songwriter. He is best known as the lead singer of the New York City band The Virgins. After two albums, the band announc
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 0xdad2fc970df08b4ef3a87490b869f91cd57233f18f76e62057ae43d105f8df20. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/635bf5d8-d3f0-4288-9a2a-7d1a75e12874.json and https://artists.proofprofile.net/proofs/artist/635bf5d8-d3f0-4288-9a2a-7d1a75e12874.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).