Tom MacRae (born 6 August 1977) is an English television writer, author, playwright, lyricist, television producer, and screenwriter. He is best known as the creator of the television series Threesome
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 0xd9713321bdd7871d234e77dafbc9ee0912b8d45dd2f5de4bb6713afeaca4abff. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44be0af1-a3ce-48c6-952d-3b906cf4579d.json and https://artists.proofprofile.net/proofs/artist/44be0af1-a3ce-48c6-952d-3b906cf4579d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).