A caron ( ) or háček ( , plural háčeks or háčky), is a diacritic mark () placed over certain letters in the orthography of some languages, to indicate a change of the related letter's pronunciation. T
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 0xdae4f4980c53e78f97e68b39f62fae71aca4798ff8644e8442c66292d3e2f63c. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3d7256b-9712-4ae4-9d7a-6c7b6bd7dc90.json and https://artists.proofprofile.net/proofs/artist/a3d7256b-9712-4ae4-9d7a-6c7b6bd7dc90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).