In popular music, a side project is a project undertaken by one or more people already known for their involvement in another band. It can also be an artist or a band temporarily switching to a differ
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 0xb6a55edf68279ec67e32ebd22616b5cdcee836a27317b68118d6cf51c99c4bc2. 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/736d4419-3a4d-4f10-9348-5e27ab2b5cf7.json and https://artists.proofprofile.net/proofs/artist/736d4419-3a4d-4f10-9348-5e27ab2b5cf7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).