thumb|right|The word ganja written in graffiti in Seville, Spain. Ganja or ganjah (, ; ) is one of the oldest and most commonly used synonyms for cannabis flower, specifically marijuana or hashish. I
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 0xfbf8ed97a99ec5abaa3a2a80dfb067f1bd5cbfbe149ea3693c8d6d870a8b412b. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b587d64-e2d8-47a3-b12c-53fdce3f3112.json and https://artists.proofprofile.net/proofs/artist/1b587d64-e2d8-47a3-b12c-53fdce3f3112.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).