Pipe(s), PIPE(S) or piping may refer to: Objects Pipe (fluid conveyance), a hollow cylinder following certain dimension rules Piping, the use of pipes in industry Smoking pipe Tobacco pipe Half-
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2e0c0cd0ef85f23b5d78663f571050c4d4d2c7fd3483d584bce01806eb59ef. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5db35de6-e98f-4c4f-9d41-e28f40d5682c.json and https://artists.proofprofile.net/proofs/artist/5db35de6-e98f-4c4f-9d41-e28f40d5682c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).