Esse may refer to: Places Essé, a commune in the Ille-et-Vilaine department, Brittany, northwestern France Esse, Charente, a commune in the Charente department, Nouvelle-Aquitaine, southwestern Fra
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 0xdb4415134e4a853cdd581786ac2255e42fa305d8483ac7800ded960988dd0c5c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bd6aefb-3477-4d9b-a32e-01fa9444157b.json and https://artists.proofprofile.net/proofs/artist/6bd6aefb-3477-4d9b-a32e-01fa9444157b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).