thumb|A bed of nails thumb|Children on a bed of nails used for science popularization in Brazil A bed of nails is an oblong piece of wood, the size of a bed, with nails pointing upwards out of it. Wh
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 0x18d4f897ecd22cdadfa5f3b3220da4a6bf06d714e67cac1e0f2645e7f06e7689. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fb95f7c-3ae3-47f3-bc94-e8fd0f37b016.json and https://artists.proofprofile.net/proofs/artist/1fb95f7c-3ae3-47f3-bc94-e8fd0f37b016.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).