Master, master's or masters may refer to: Ranks or titles Education Master (college), head of a college Master's degree, a postgraduate or sometimes undergraduate degree in the specified discipline S
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 0x9629d6fa6d6ffbb644bd81586e513e791da8b3b25e78db3342630a68d776b621. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdd03aee-6c4b-49d0-b147-95b690f43f20.json and https://artists.proofprofile.net/proofs/artist/bdd03aee-6c4b-49d0-b147-95b690f43f20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).