Jason "Jay" Kay (born Jason Luís Cheetham; 30 December 1969) is an English singer and songwriter. In 1992, he co-founded the acid jazz and funk band Jamiroquai, and he still serves as their lead vocal
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 0x9cfd0b998fc16935b1683a76b1cff2f96f870ea40f639985682c4866236172bd. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7b9200b-9138-4083-8d8d-346087075e76.json and https://artists.proofprofile.net/proofs/artist/b7b9200b-9138-4083-8d8d-346087075e76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).