ELV or ELVs may refer to: Elfin Cove Seaplane Base, an airport in Alaska that has IATA code ELV End of Life Vehicles Directive, a European Union directive to facilitate recycling and reuse of old aut
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 0x10747a97f66f013f8e8cf1a7254ecebf3c9e51c9bc270c00bfe3ffc160b703eb. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b9ad154-c600-441a-a297-25c8fc10f209.json and https://artists.proofprofile.net/proofs/artist/3b9ad154-c600-441a-a297-25c8fc10f209.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).