Foster may refer to: People Foster (surname) Foster Brooks (1912–2001), American actor Foster Moreau (born 1997), American football player Foster Sarell (born 1998), American football player Joh
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 0xbbe0a2970d9b27f73aed2c52b03c629da89c69d6a4973cca87e6d888a4c0f94d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/667e3cb5-6e74-40e2-b0b0-5c39b43f24ae.json and https://artists.proofprofile.net/proofs/artist/667e3cb5-6e74-40e2-b0b0-5c39b43f24ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).