Chally is an alternate spelling for: Çallı, Zardab, a village in Azerbaijan Challis (fabric), a type of fabric Challenger 1, a British tank in service from the mid-1980s to early 21st century Cha
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457e63baa0ef189222e1c81f08947313f90f06e817b8fbbecacd27651e2cc34. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da47d37e-cafe-47fd-87d7-66341bc46870.json and https://artists.proofprofile.net/proofs/artist/da47d37e-cafe-47fd-87d7-66341bc46870.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).