Frostbite is an injury to skin or other living tissue that is allowed to freeze, especially affecting the fingers, toes, nose, ears, cheeks and chin. Most often, frostbite occurs in the hands and feet
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 0x4fd5ee5f0cd25170b5a4624e4cf87cb0199e99b0d659067e99431726332487dd. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e215dff7-818e-457d-b86d-91f6efcf49ff.json and https://artists.proofprofile.net/proofs/artist/e215dff7-818e-457d-b86d-91f6efcf49ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The King In Yellow (Lost Carcosa/Cassilda's Song)