Andrew Douglas Strachan (born 20 August 1974) is an Australian rock musician. In 1994, after growing up in Adelaide, he relocated to Melbourne, and in 2000 he became the drummer of Sydney-based altern
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 0x7fb9997c7940e22beb6e62ea37b21edc6401dca75a3a5cf511d33ecd6916e273. Chain 2 (Bitcoin): anchored in block 954050 (2026-06-17T05:14:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42b0f7b5-4244-4799-9e52-4b3adbb86d70.json and https://artists.proofprofile.net/proofs/artist/42b0f7b5-4244-4799-9e52-4b3adbb86d70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).