Guy Theodore Sebastian (born 26 October 1981) is an Australian singer, songwriter and record producer who rose to fame after winning the first season of Australian Idol, in 2003. Born in Malaysia and
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 0xdfd3b597ac1d22476cc9b865d8a4038b803a0717d071f4509e3e98663d96c2dc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8622a229-8750-4b0c-9fee-e84a77b0875b.json and https://artists.proofprofile.net/proofs/artist/8622a229-8750-4b0c-9fee-e84a77b0875b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.