alt=Edison Diamond Disc record: "Are you lonesome to-night?", composed by Roy Turk and Lou Handman, performed by Vaughn De Leath (vocal) and Bill Regis (piano), recorded in New York, New York on June
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 0x2159f3f9641f1e3adbaf3c069cc3f67aa2cf89094242d3c4937d9c390d2af93e. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7ad19ed-62da-4b19-9c72-081e888d2078.json and https://artists.proofprofile.net/proofs/artist/c7ad19ed-62da-4b19-9c72-081e888d2078.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x92bd5032c321dd40df45787d39ec77d4d4bf0b7b7025cdaf10335fb934ba42f2. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBENE0601929.
Vaughn De Leath: The Radio Girl 1921-1929
Vaughn De Leath Original Recordings 1925-1929
1920's Jazz Radio Vocals (Encore 1 Edison) [Recorded 1926-1927]
1920's Jazz Radio Vocals (Encore 2) [Edison] [Recorded 1927-1928]
1920's Jazz Radio Vocals (Encore 3) [Edison] [Recorded 1928-1929]
The Original Radio Girl, Vol. 3 (1920's Jazz Vocals) [Recorded 1927]
The Original Radio Girl, Vol. 1 (1920's Jazz Vocals) [Recorded 1924-1927]
The Original Radio Girl, Vol. 4 (1920's Jazz Vocals) [Recorded 1927-1931]
The Original Radio Girl, Vol. 2 (1920's Jazz Vocals) [Recorded 1927]
Gatsby's Jazz Nights, Vol. 14 High Society Swing
The Naughty 1920s: Red Hot & Risque Songs of the Jazz Age, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a321d749866e2c9f20e7b1527a0343df9efb802632440de1bf124a6b9a87de1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USM2U0804407.