The Magical Music Box, more commonly known as The Music Box was a British children's magazine. It ran from 1994 to 1996 in a series of 52 fortnightly serialisations. The aim of the magazine was to int
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 0x8dc681f498bd8c02f0e6d658db374aa13e2204d5c14fe1ea1e8fbae671ce4855. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4f45efd-b121-4855-857e-a1a0b348502f.json and https://artists.proofprofile.net/proofs/artist/b4f45efd-b121-4855-857e-a1a0b348502f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).