Siles may refer to: People Jemma Siles (b. 1997), Australian singer/songwriter Hernando Siles Reyes (b. 1882), 31st President of Bolivia, 27th Vice President of Bolivia Hernán Siles Zuazo (b. 1914),
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 0xba9a2e4e943d093e7f2698ef6ca3cf4f96a4e537f6a1a515f273d346146b1e3c. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26957ff4-daaa-439e-99f1-7ddf7801f108.json and https://artists.proofprofile.net/proofs/artist/26957ff4-daaa-439e-99f1-7ddf7801f108.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).