Proto or PROTO may refer to: Language Proto-, an English prefix meaning "first" Media Proto (magazine), an American science magazine Radio Proto, a radio station in Cyprus Music Proto (Holl
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 0x1ed14fae91b11a77893be74ab70cb8ff71f7f6f45c642cd098389109c6f66955. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edbd01f3-7474-4124-8ef0-d6024d943dcd.json and https://artists.proofprofile.net/proofs/artist/edbd01f3-7474-4124-8ef0-d6024d943dcd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).