In Greek mythology, Hypnos (; Ancient Greek: , 'sleep'),. also spelled Hypnus, is the personification of sleep. The Roman equivalent is Somnus.Tripp, s.vv. Hypnos, Somnus. His name is the origin of th
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 0x607408ad41c14f7f4130ac5fca637fcc28e3f55956b2ed880d93598beac8a0ff. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4ce5aa1-72f0-4a81-8c16-e0ee04621126.json and https://artists.proofprofile.net/proofs/artist/b4ce5aa1-72f0-4a81-8c16-e0ee04621126.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).