Polly Ferman (born October 21, 1944, Montevideo, Uruguay) is an Uruguayan pianist, classical musician, music director and producer. She has performed as a solo pianist since 1947 and recorded more th
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 0x6e45f16ffca86ff58d43a79af1790992b29c6a83e849b5e903bca7c092da0cce. 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/8a0eff40-ed0b-4e5a-b649-62fa67434bf3.json and https://artists.proofprofile.net/proofs/artist/8a0eff40-ed0b-4e5a-b649-62fa67434bf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Polly Ferman's GlamourTango (Tango In Feminine Form)