Somnia may refer to Somnia (film), a 2016 American horror film Somnia, a book of poetry by A. W. Yrjänä The Somnia, the sons of Somnus, the Roman god of sleep Somnia (B.o.B album), a 2020 album by
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 0x7ae0cd2ae9b466e51526eb05847d4723833fe7ecc071264f5a436bd3cf342687. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ba8e7f2-9009-414a-ae68-465be3055c81.json and https://artists.proofprofile.net/proofs/artist/9ba8e7f2-9009-414a-ae68-465be3055c81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).