Stormhammer, stylized StormHammer, is a power metal group from Munich, Germany. Active since 1993, they notably released two albums on Century Media Records, one on Mausoleum Records and three on Mass
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 0x6bda6c713aca10190b14cb57d8837020d4315ef6dce11cb4e594cdb9cc1dec4c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/759cb5f6-c62f-4cac-a72c-3f91aa43d087.json and https://artists.proofprofile.net/proofs/artist/759cb5f6-c62f-4cac-a72c-3f91aa43d087.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).