Chitra may refer to: Art Chitra (art), a historic art that includes paintings, sketching with or without multiple colors People Chithra, Indian playback singer Chitra (actress), Indian film actre
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 0x1e74f745f0d91c1a8123024e00c276a20422f4c722824c958b45becbb1e77e0a. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/456fd7c2-223f-411e-99bb-fef5f3d3d11e.json and https://artists.proofprofile.net/proofs/artist/456fd7c2-223f-411e-99bb-fef5f3d3d11e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).