Chose (pronounced: , French for "thing") is a term used in common law tradition to refer to rights in property, specifically a combined bundle of rights.Gullifer & Payne, Corporate Finance Law, 2nd ed
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 0xd99beb9e02c35c9010f9996324cffd86b0a5bb26f657fa3e191910c3a6a6138a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44c2f07f-a5da-4be4-9acc-3b464ad0162f.json and https://artists.proofprofile.net/proofs/artist/44c2f07f-a5da-4be4-9acc-3b464ad0162f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).