Sunray is a term used in radio voice procedure (the conventions used in radio conversation) in the British military and in the military of nations strongly influenced by the British. It refers to the
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 0x63be1c2aa9685ece776a5efd5bb8a2d4b2a7bc1d82a7ae8e79092b1c78f5e050. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38c7a465-30e4-4e68-b6ad-6645717ff6a4.json and https://artists.proofprofile.net/proofs/artist/38c7a465-30e4-4e68-b6ad-6645717ff6a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).