In folklore, a revenant is a spirit or animated corpse that is believed to have been resurrected to haunt the living. The word revenant is derived from the Old French word (see also the related Fren
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 0xf5169b5f7fd968c76ebc20ba7399b94b5490ed2dc3064481f1c212dace2c1b34. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7df6afe5-32c4-40c0-8c12-be15ad4f20d1.json and https://artists.proofprofile.net/proofs/artist/7df6afe5-32c4-40c0-8c12-be15ad4f20d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).