Roby Lakatos (born 1965) is a violinist from Hungary who combines jazz, classical, and Hungarian Romani music. Career Lakatos was born in 1965 into a family of Romani violinists descended from János
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 0xacafbb350e0d3f06b86baaba9762f9ca1e07a629cf21ebc524974f55ea892200. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7741e25-b1a9-48dc-b376-083500408e90.json and https://artists.proofprofile.net/proofs/artist/a7741e25-b1a9-48dc-b376-083500408e90.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb3106426b9b6a93c1f53f7cc03c62a14749fc511ce4cccc9b7c181cff03812. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEF059802030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc8866d137b1f280ebe0fc43624557d8be5ba6fd99464ffeae214a265fd8b07. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEF059802060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaac34a9d321629e38790a950e830d13fd4b11a437b8456cd8b1dfee7ab056b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEF059802070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8fceb0a7f2e2a6f3dc238cf8573f37a5b2ea9914ea5d48590aab44d2b4b16. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:20Z), 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/DEF059802100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf35826efcc9ae13077ab4704b5e6713f1c2d5ec77d2e33575d6ddca47f28b0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:45Z), 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/DEF059802110.
Live from Budapest: Symphony "The Bird in the Dust"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3fde331a7601d9c120b05b348e7cf817ae581830c3cf2449ddb4662140e82e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEF059902640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5036f5bfc0df5094c951aff6ff553e1c1de38300e02cc13bd35887d3ab8a3fc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEF059902650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb326ad34b0cc16e3de8130da3d0e7d12b0364817bd75989a9d430c2fb75118d1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEF059902660.
Live from Budapest: Hora di Marrakchi "Night in Marrakech"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408c4e6ba163fc3c2eb24c461f7eb2d319562313e309b421f49bcba8f57ca64f. 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/DEF059902680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb61bf4593e6eac6b23a9c205351d3f87e6d151b52a1fc9d8ed135dc37f62cb4. 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/DEF059902690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a36bf3bc22c1121e610009fe5ff9e54886f633ed4ca7e13e389cb088818cf4. 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/DEF059902700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe308b48416a762e52afa6c899b99938a27f7416ea3cbc45cb1d21dad09993237. 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/DEF059902720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4faa396c81161b4ced163f17c1e0d9e72f328aa32814fc1374606b132927455. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF059902740.
Scène de Csárdás: On the Waves of the Balaton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5439e7dccf5e6267c0fe0227f8d4b3dad4ac6e31fbe7737e5e45c90db355b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF059902770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b91c53c63728e28a7d8e5daeb666932bedbe649679c7c2f3e15350646c487cf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BEB140502415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe665fae52956efebba44f3bf31765a74e19f858ac85f0f34a6524a1386a613f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BEB140502401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b91c53c63728e28a7d8e5daeb666932bedbe649679c7c2f3e15350646c487cf. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:07Z), 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/BEB140502415.
Samson et Dalila, Op. 47: Mon coeur s’ouvre à ta voix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cf3f7858c50193ab88e1289b61acc091400932f3dc41e472675fe51534aa77. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BEB141304011.
A Magyar Cigányzene Antológiája Wolume 1