thumb|Islamic portrayal of the angel Metatron () depicted in the ( 'Degrees of Truths') by Nasir ad-Din Rammal in the 14th century CE. Metatron (Mishnaic Hebrew: Meṭāṭrōn), or Matatron (), is an a
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 0xa057cf17000879d7a4b53ceda1ae21574edbc64d4afd8b1bd44ae17e2562cf14. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9951ac7f-1ce7-4492-a96c-8fb56bb7df63.json and https://artists.proofprofile.net/proofs/artist/9951ac7f-1ce7-4492-a96c-8fb56bb7df63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frequências de solfejo (174 hz - 963 hz)