Grand Champeen is an Austin, Texas-based rock band. Formation and early years Guitarists/vocalists Channing Lewis and Michael Crow met drummer Ned Stewart while attending the private boarding schoo
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 0x9a7b1ef92ed3df504ae8a0a3bcc1f82bec3be69370c106958d6a496a22e676bf. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d05dec2a-2929-4cd9-ae95-e7ab971a2ed2.json and https://artists.proofprofile.net/proofs/artist/d05dec2a-2929-4cd9-ae95-e7ab971a2ed2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).