A Flower is a song for voice and closed piano by John Cage. It was composed in 1950, for a choreography by Louise Lippold, wife of sculptor Richard Lippold. There is no text; the singer vocalises a sm
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 0x768489dd5077cd56e2c95555dfacd99c00591a3c35b84d4739eb7ea657f37578. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5157db2d-920e-47b0-b267-5a57d34dbaa2.json and https://artists.proofprofile.net/proofs/artist/5157db2d-920e-47b0-b267-5a57d34dbaa2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).