Legend Seven was a Christian hard rock band formed in the early 1990s (formerly with the name Legend) by three former members of Ruscha, another Christian band from the 1980s. History The band made i
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 0xd6e930f514d914b41505ae13348ac10da6dcd52c9492ea231e679918583eee37. 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/5fcadb98-fb66-4641-a38b-ce6545b2c0ef.json and https://artists.proofprofile.net/proofs/artist/5fcadb98-fb66-4641-a38b-ce6545b2c0ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).