Children's Corner, L. 113, is a six-movement suite for solo piano by Claude Debussy. It was published by Durand in 1908, and was first performed by Harold Bauer in Paris on 18 December that year. In 1
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 0x587c4cfed9de9de1bfdacb443db9ede5ca9a6c9e66dab4c33199ad5e12812459. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89457421-0034-40dc-8b17-e1e4defb2bfc.json and https://artists.proofprofile.net/proofs/artist/89457421-0034-40dc-8b17-e1e4defb2bfc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Princesa Flotante y Otras Canciones...