thumb|Pair of |alt=A pair of white tabi. Tabi are traditional Japanese socks with split-toe construction. are traditional Japanese socks worn with thonged footwear such as zori, dating back to the 15
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 0x70819cf391227f3c0f1017f3539e57e527716847380f16f005040a4157c4a66d. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/930c7aee-a7eb-4cf0-94f8-f7e8eac5b82f.json and https://artists.proofprofile.net/proofs/artist/930c7aee-a7eb-4cf0-94f8-f7e8eac5b82f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).