Reece John Phillip Mastin (born 24 November 1994) is an English-born Australian singer and songwriter who won the third season of The X Factor Australia in 2011. Mastin subsequently signed with Sony M
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 0x6f9b603c7ff7e2c42fd86dc9cfd47320e56c9c770f9e2713ff8721ddba13a413. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d6237d8-8e1a-4edf-9613-1655e570dc65.json and https://artists.proofprofile.net/proofs/artist/7d6237d8-8e1a-4edf-9613-1655e570dc65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).