Chachi may refer to: Chachi people, an indigenous people of Ecuador Chachi language, the Barbacoan language spoken by them anything of, from, or related to Chhachh, a region in Punjab, Pakistan Ch
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 0xc63d1a7a54573800d35f8a190d3a0d7b23aa16d5919e28c2f7e1c21cc2450d3d. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/782a3f83-55c8-459f-b329-a8a3161d91e6.json and https://artists.proofprofile.net/proofs/artist/782a3f83-55c8-459f-b329-a8a3161d91e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).