Surplus may refer to: Economic surplus, one of various supplementary values Excess supply, a situation in which the quantity of a good or service supplied is more than the quantity demanded, and th
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 0xe635bd3a8b551cdfe3704bce491d231b71ad474fe207e6e3447ee82343fc7043. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d22f0c1-33d0-4bad-8442-b8b80c295725.json and https://artists.proofprofile.net/proofs/artist/7d22f0c1-33d0-4bad-8442-b8b80c295725.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).