Apostolos "Tolis" Voskopoulos (; 26 July 1940 – 19 July 2021) was a Greek singer. He was renowned for his mastery of laika, a Greek music style. He also starred in many films and played in the theat
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 0x4f2a93f79aa4dbe42a2d7b04a7a293d232fe0038135b106c84b70f19cd43bea1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e81ff9e-a711-4ca9-a072-a02cce73530c.json and https://artists.proofprofile.net/proofs/artist/5e81ff9e-a711-4ca9-a072-a02cce73530c.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 0x50a68e5c8d33e4fc0c95c292e129669eed43812c4c40f05504890b777ba179d6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GRE017000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2034ae347e039ca0843b2634311882574dff33ade9a74d254a848ef854fbc5f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:54Z), 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/GRE017000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57db2d2eff13075a04d6f861e4b8760c66be21b85f5dcebdf478a70de56b9585. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/GRE017100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9096fe5a81af35df43fc93fec474d192f7c70feb30dfd24ac8e3fa33910907. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRE017500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dddb8ca11c8091e116f669a1f217675efa2defd969c5609a7cc9e69cb6fa4c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GRUM70601443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e943d0a75b789ad1420a3755138bb154ff649dc3f6c13055a429c5897a847e7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:17Z), 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/GRE017700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd2e8800f2763c1eb085dc1d8ba79513e999cf1e9565a1f809149342ee379d7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRE018000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f132995949abffb9e6e8e808a76eb753527e7ff5190f72fc9261973ddb8f7a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:52Z), 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/GRE018100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599990db333db22403fa7342fe5ba213a25cb1b70e7a443b4941dfcba259b1de. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GRE018200054.
O Tolis Voskopoulos Tragoudai Manoli Hioti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bce0cbc1eedbc5b1f193e83bc7c196cc1a9c7d39acb9eebc94cf48a00cdb265. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRUM70601449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ccf7128240601fb14baa7bc29be2b24e6da10b0ae5e9803f62290561f30a2f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:15Z), 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/GRE018000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b025e546755d3cc3ad78ee4fe221a5055174f4befaf567bac5594699acc84. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRE019000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bddf34b4afce8f595c9ea226c70aac248f02c7dd5e450408627fb46a1fdee4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:01Z), 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/GRUM70601454.
Ego Ki Esy (Oi Megales Epitychies - Pt. 2)
Ego Ki Esy (Oi Megales Epitychies - Pt. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b344969a2de4e906a6a2093e11639118cc8b4642872154a9c79af68bb05aee4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:22:46Z), 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/GRUM70601440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644f9c0338b46f0fb974f87d96ef8d617b6bfc90e640ca6b1167bc16ac0674e9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GRPO19700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294dd0b5018b1bbf8f4f7fa120a1f1b61a84460e854ecbc4b127eb77161850e0. 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/GRHV10200144.
Aderfia Mou Alites Poulia (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312f80121a3361e362c049a6bcd6aeea0891b1421e8f24ab30cc872871c7fc73. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GRE017000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb072b2d42845d2220515bfd0e75fb7e2d0af01fe8c1be6aef58ea41354f2f2ef. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GRE017500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb06e99fe57c0f536cfb133c4e3c78488298bcd0295836f7cee502c03482f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMBZ92031084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d7b1653d90faf78cf7a0f3743419d3e23e85493c6954506ccca0eb333a4f60. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMBZ92031085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ad85f143280439789104f1dbebafeea806dd9090a4ed63aeeeada5ff5758c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMBZ92031096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af8701e2b98c95f9f00985331d462da244ede8f0598dea9082640713ec5d99. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM7282095275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf362bbad747cf2d9cfea074205107e0def73d5c96a6786344b873a3f101c1ec8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GRE017000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c96087566a1aa047e1538a49ca47b8fc7cea67c17e7e077562e4e92769b280. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GRE018000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312f80121a3361e362c049a6bcd6aeea0891b1421e8f24ab30cc872871c7fc73. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRE017000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ccf7128240601fb14baa7bc29be2b24e6da10b0ae5e9803f62290561f30a2f. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:07Z), 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/GRE018000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9b8b46bfa265a4e3462fe1523223c33a0d1f5a978c80f78a0c92141f556aec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRE017200050.
Psilli St' Aftia Mou - From "Se Iketevo Agapi Mou"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4766f97e696dc813bc6a53edeb3acb9cdc0100d2362afd94ee0722f5f2cb5f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRE017000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd025e902b2aeabc14a910b2bf662fdde01938d7c76174726f968896f4061ad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRUM71801257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8045083b7b6e3ee4d487150764cc38cea9ac12c204c7599357c9cc18bab57f3b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GRE017700083.
Tou Kosmou I Kiriakes - 45 Hronia Lefteris Papadopoulos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312f80121a3361e362c049a6bcd6aeea0891b1421e8f24ab30cc872871c7fc73. 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/GRE017000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744cb53f704ab88d63b50f24049a5f697e8de38931715a9e99343a4a5f3554fc. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QM4TW1601441.
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