Nikolaos "Nikos" Papazoglou (in Greek: Νίκος Παπάζογλου; 20 March 1948 – 17 April 2011) was a Greek singer-songwriter, musician, and producer from Thessaloniki. Papazoglou began performing in a numbe
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 0x8a7b803a725e36f995a607ee8eee071120b783751d3eceacdc645def2d1342b5. 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/3ea29d90-211e-4954-b299-aa5889b0d902.json and https://artists.proofprofile.net/proofs/artist/3ea29d90-211e-4954-b299-aa5889b0d902.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 0x311c75a1c7f4b88fe13250139cbef16e7d852ad9491091f923aa96bf3f743d74. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:00:13Z), 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/GRSPN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e72982feceb392c39d04b23eba59805c5b0da90d94e01ee2838025008ac7e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GRSPN8400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9427920646580bb1ebeb5c1c24372e261f1adca4d7aab95145e12c4e3e51a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GRSPN8400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a97b716e3087ab4638d203ea05401454598fb439a1534fd63c632f5772c969. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GRSPN8400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa729a9b49e4687c387a91486a92ff130ec417e14537846a62993a6d245a34f. 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/GRSPN8400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87aabaeb5a000375d2012184f8b4bbad69782c17aced68bb2c4be45925ff17a. 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/GRSPN8600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bb6017d5df05fe3e30de5def779f9d8b4d80233e3b332ff795b00ae9691cb7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GRSPN9000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eca42d8bf4604fba88f685b18181e732f88219c1fc7a97afb79ba30309ccfe. 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/GRSPN9000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ec5d7471d41d27bd15f39605a167a72b77034f5790194dd2ff99fef11adb22. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:28Z), 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/GRSPN9000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a77d8931c10d66b34c9728d844aa9341bce52c348524bb3c6a808fd52e8c5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GRSPN9000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16f98186213a506bdd1925091393135b93c78923be459928290d7a2c8644bad. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GRSPN9000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2172a712f72365da94bc39188364ce2056e48bdfb0ca7295555a381d63772f0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GRSPN9000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dcfacbc7fd1fde5aab53d6b1f33a559b88ee81e0d13842866103b4f89bb095. 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/GRSPN9000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0458f244d67fed08d61393f9ae6511d2205f8ac691fd4e00fb4ab12ce631a193. 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/GRSPN9500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4a5ff5074d26333d8d5cf74114ba89877eb118e19ff796914112452cafe91b. 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/GRSPN0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7085aec9d92f57f17332209199fc45027cabfe56bc3c9767952668b5fee3fe. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GRSPN0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded26857fadbfd3e5fdfb0aaf1be3bd4a391d51e03df20b12c96c84ac5acf1dc. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:26Z), 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/GRSPN0500004.