Sarosa is a genus of moths in the subfamily Arctiinae. The genus was erected by Francis Walker in 1854. Species Sarosa acutior (Felder, 1874) Sarosa albraamea Schaus, 1924 Sarosa annotata Dognin, 191
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 0x2718d8047818effe9d217b2a8102cf4408ca6dc58601a88ce3aeb069e56da123. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca4832a8-aac1-43e5-8c58-b5ec2a1fa599.json and https://artists.proofprofile.net/proofs/artist/ca4832a8-aac1-43e5-8c58-b5ec2a1fa599.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).