Pache is a surname. Notable people with this surname include: Claude Pache (born 1943), French rower Cristian Pache (born 1998), Dominican professional baseball outfielder François Pache (born 1932),
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 0x478faba2a78166a5b8d4f486493b0338392693a734b3e8e4ce78c0829272467b. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1ea07e5-ad83-4d9d-b8c2-9e8fb67c55fc.json and https://artists.proofprofile.net/proofs/artist/e1ea07e5-ad83-4d9d-b8c2-9e8fb67c55fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).