thumb|2008 in Frankfurt Antal "Tony" Lakatos (born 13 November 1958 in Budapest) is a Hungarian Jazz saxophonist (tenor, soprano saxophone). He lives in Frankfurt (Germany). Lakatos attended the Béla
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 0x6b2d68e97b94c1c376f597018529f29c4329e3cdfe65913b9a6c25e128eaf0d1. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1799350d-259d-4754-88d8-0df9e1288734.json and https://artists.proofprofile.net/proofs/artist/1799350d-259d-4754-88d8-0df9e1288734.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hungarian Jazz History, Vol. 14: Tony Lakatos and Friends: Sing Sing Song
Jazz Master Tracks Vol 1 Standards sessions
Jazz Master Tracks, Vol. 1 (Standards Sessions)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ec45d7a827488785f2d92805847d7a5a8fba9d24b1942e390898f1e5f6feaf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA299600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0140b7f89dab0e7d56863f4bd67dc2f8cb275f7dae6f11683869126d92a0be00. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMEU32101411.