Eiichiro, Eiichirō, Eiichirou or Eiichiroh (written: , or ) is a masculine Japanese given name. Notable people with the name include: Eiichiro Azuma, American historian , Japanese scientist , Japane
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 0x49ce9930ca1f868f26932df8ed1c49776f93cab45b5071b5f1739be44231f8b5. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47e321f2-ee31-4e11-a52b-1e1794e377e2.json and https://artists.proofprofile.net/proofs/artist/47e321f2-ee31-4e11-a52b-1e1794e377e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).