Leon Somov & Jazzu was a Lithuanian electronic music group, composed of Leonas Somovas, also known as Leon Somov, and Justė Arlauskaitė, also known as Jazzu. Band In 2008 Leon Somov & Jazzu started
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 0xfd0ab873a83bbb9f6e55930351c54e424f3193aa7512b8fabc2a8fc3352a30bd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05867374-dc93-46bf-9ddc-b3b5236d35a9.json and https://artists.proofprofile.net/proofs/artist/05867374-dc93-46bf-9ddc-b3b5236d35a9.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 0xcffd0a0361385bece28e21eaef1e3464a639c5dea4068a59f19a18bc23feafc3. 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/USCGH1727652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4274dc78aac992ba5a05317be20d173d926f57f036c99d716de3c639ae54c. 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/USCGH1727653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377cfc5d1038da40b34c1217610410078fb40d8f1d7885e81f3a936f6b03e942. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGH1727657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f59995c1fdcf8fc35b4ff4aa3d6f179963ac9790ef7b8241eb87c28d210cf2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCGH1727658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ff4db1288bb9ee61b57d9df2f804fedb38f57805e1b59af003336436f8e73e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCGH1727659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46d31b36731ddbdfdbcc4ce4499f82abde83cca2b7e5644f565d0f926d6adae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH1727660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b64db483d76f79e3868ff5b22ed0dc5d30ac69087664a6c824d8a553928222. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGH1727654.
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 0x9efadf9a56c18aa3799e40c9736b311207d8356c02555af83de8c034974d4c16. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGH1727655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62169e2f3453b8ed8080a127b0da4f787b079b58f8a50f82e48fae39c1de96ef. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USCGH1727656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da5abb927f51be7ef1cb46f5ac0b3391e38d56a7ab343c24ac8702934ecda6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDY41571073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664189b6e83f8163eef2dcc6f2f95cca7298412c147fcda5361e18e65c482a90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:38Z), 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/USDY41571074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc9a886ed1f77fbc30f745935625aa3a7681e763134b7579ad210d37f2b4ca6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDY41571075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855993132d56242659bace283121cec7128a620b713e27d8030c3f11d26e5476. 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/USDY41571077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ec51415d9db11fb3a86b5dc19dad0b4feca69b3390a3895a7e0965bd60a01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDY41571078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6fd1440304384961cc19e8d12bf5a49b3f09d3fe0feecd7a94724cfef27e8b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USDY41571079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f29e6ce793265fa26f77da4420ae9622c8a828abd3b9defe996f754c4cef2c6. 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/USDY41571080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dad48647d27b8151e8b89805be28591d7df4eae80f59dd06595a3bd75bd6740. 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/USDY41571081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee47917b4f4f5ea8837e81b14d4912dacd38c2dd3944fe9f5fd256eb64c5c866. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY41571082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc79779bd6871823f4654c5ac9a54a4547aac942d330e06cc06083b10c0a92b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDY41571083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175d82ee9266b93279249c17a8f1b4528738e2f84f1f3b803795e8cabdf5c569. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USDY41571076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310a0a96cb1d667bd22d32e68d1e6a15f1794cb522d9f3f0065592a635ff9de. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USDY41571084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c12cf06086e16d2580452636eaa59ba5fc94bb848035ec5145efc926db3f0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM91371326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1894ac9b284f8a80b27b056e9dfb87301ac443add7433e0293e7581f7104c. 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/USHM91371327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d33bbf00afa831d3b22ae48084b0f1bf6b7477e5cc19628873c180a5416dcb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91371328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc456286745b36c0ed12ba33401f7ba9ee739de85fcf687ca652404a887b83. 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/USHM91371330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d004e0bb373ad1e60f1fae2e55ad011d8e1ad245611a26bf519e3303275b8b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM91371332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea637a241c030a5e8d40d0cdbf5bc4c78cd67f6725bf1fc0d107a472f8e71b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM91371335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858549979bb2501ed98d881b04163bda13784273e430cb6425b0c2db25307cd2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM91371337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c30f4036fbecfee06d718b5ae4af0b9fd0e66c35ef90d7e77a9d44a90d9532e. 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/USHM91371339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a3c465e5b6c3da523d9f541bd52cecf7b304c40ceb9b6d4f83f72ecd79fc49. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USHM91371329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07d91bd1da859f6eba7e95eba4ecb641d025d5eadc310af26175c22cd3775d6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM91371331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e3ef31db035fe088b88040b31182858e91f3405af6dd80704f30fdc7f14326. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHM91371333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9565a284a9fab2309e6da288ae7c31b6c3f1e4496208ddcaea9bfc2ebc4ae50f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM91371334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9968fea8bd11ee5a3b7a10ade9fedc9c3cf375654b810a3590fe3cfdfb8c5e4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USHM91371336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbdf1ddc4494a08c2b42b6a02dd8d3cb74db14838f80a42476a4920076b2c02. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/USHM91371338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2bb22dc2434c96d5b30af593fbe3d77f0bed93751f2ba0ae87c9b2733967bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX872424295.
Who's Shot The Silence?! feat. Jazzu - Album Redo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2905b07de4f2ffecd9a517a023429676744f7d0381ea9bd58498a100de9f6528. 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/DEPL91204808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b6474d47ef8888d57242f19bac8a3603f9d27d58cb51e891a4381865c0a26. 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/DEPL91204805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1145e219b430162045534a5349501104f8fc5ed2950e5302fb74e6b277dfa4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USEVB4900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22cca811e8c5f7994899bc30dc2d381fdf868015e2e78f2037abd005a2afcbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LTA191500036.