Sprout House Band (Tommy Guerrero, Jack Johnson, Money Mark, Adam Topol)
{"copyright_id":"0xd2a87abbe7744cfe6344a27cd3aef9397875bff31bb163c685207a54f8d2e71b","name":"Sprout House Band (Tommy Guerrero, Jack Johnson, Money Mark, Adam Topol)","registered_at":"2026-06-21T01:38:50Z","symbol":"NIM1776328","token_address":"0xcd727d0a9251ad43ddc611de365ea1f66ec373db","type":"artist","uuid":"d224cd10-c3f6-47cb-96a3-9b95ae595df6"}
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 0xd2a87abbe7744cfe6344a27cd3aef9397875bff31bb163c685207a54f8d2e71b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d224cd10-c3f6-47cb-96a3-9b95ae595df6.json and https://artists.proofprofile.net/proofs/artist/d224cd10-c3f6-47cb-96a3-9b95ae595df6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).