Sianne Avantie, (born May 20, 1955) better known as Anne Avantie is an Indonesian fashion designer and contemporary kebaya pioneer. Her kebaya has been known on an international scale and is often wor
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 0x64b6330bb3258793fcebab2343d9b8650e943557b88cadd34f64205a93b0767f. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c516656b-a79c-4dc8-8c09-9f30fb535627.json and https://artists.proofprofile.net/proofs/artist/c516656b-a79c-4dc8-8c09-9f30fb535627.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).