thumb|Drawing of the archetypical ninja from a series of sketches by Hokusai. Woodblock print on paper. Vol. six, 1817. A , or was a spy and infiltrator in pre-modern Japan. Antecedents may have ex
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789da2968239ee883e1dc732264d81536ba421f1638c4c784d7dc90e2799a720. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/512469de-8121-455a-bb74-1f3960ee1474.json and https://artists.proofprofile.net/proofs/artist/512469de-8121-455a-bb74-1f3960ee1474.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).