Santiago ( , ; ), also known as Santiago de Chile (), is the capital and largest city of Chile and one of the largest cities in the Americas. Located in the Chilean Central Valley within the Santiago
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 0x34b32ccc9e2e860c49003070403fa915424f5be6003e0f44e2cf3cb45b23b6bc. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d2d8bfb-9c4c-4d9d-8071-efca09dbf99f.json and https://artists.proofprofile.net/proofs/artist/2d2d8bfb-9c4c-4d9d-8071-efca09dbf99f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).