Ostry () is a stratovolcano located in the northern part of the Kamchatka Peninsula, Russia. It comprises the higher Ostry volcano and the smaller Kutina volcano. Ostry is one of the highest peaks of
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 0xd34a0a9ffbcf2a1fe62284aeec5116aba6d06ad2893e946197261fa163b0cf14. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcc93ee1-e425-49dc-818d-778194c184a4.json and https://artists.proofprofile.net/proofs/artist/fcc93ee1-e425-49dc-818d-778194c184a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).