G19 may refer to: , an Auk-class minesweeper of the Mexican Navy County Route G19 (California) Glock 19, a pistol G19 (Hong Kong), a parliamentary group in Hong Kong , a Wickes-class destroyer o
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 0x843a240e443f3e0e3269357332620566c2bbcb7c046caeb1efba61ceb1c6db96. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84f1f7d8-08a5-4e25-86a3-de7dba2f843d.json and https://artists.proofprofile.net/proofs/artist/84f1f7d8-08a5-4e25-86a3-de7dba2f843d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).