Kalas may refer to: Places Kalas, Karnataka, a village in India Kalas, Parner, a village in Maharashtra, India Madu Kalas, a village in Pakistan Uttar Kalas, a town in West Bengal, India Kalas, Iran,
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 0x2e1f2c2446978f906ed505d855d820803ebf9d4b20aee2327d44f6be87a9f47d. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b6bbb59-0a58-4921-80b5-8d8b69039f62.json and https://artists.proofprofile.net/proofs/artist/1b6bbb59-0a58-4921-80b5-8d8b69039f62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).