Charalambos (Babis) Tsertos (Greek: Χαράλαμπος (Μπάμπης) Τσέρτος; born October 27, 1956) is a Greek musician. His sister is the singer Nadia Karagianni and his father was also a musician who played th
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 0x468e18acf432f226feca8d80dad33d4620276020d7b55bc44641c7221aaa198d. 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/5b38b409-271e-45f4-b7ed-e83be23d66a9.json and https://artists.proofprofile.net/proofs/artist/5b38b409-271e-45f4-b7ed-e83be23d66a9.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 0xea5ca90ed22ef6fa6dcc4d25731aef40e35c3af8e1b95a89468ad241eea1fee4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GRW019300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb164d14e7c14826b0069c1245beb5e8129cf1071c9990815bb100326b97aa57d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:30Z), 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/GRW019600074.
Ta niata ta berbantika (Ta palia me ta kenourgia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95b348d661c0f9f09b9d3ea7a722f081655bcbe4d260997c83052136cfb10b. 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/GRWO19800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289775b1b00e6969d6fba6833dd14d237624b7b31974ec67d552064d08aae276. 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/GRW019900275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefde49de968fc07439fec2bba4ad26e864d890bb212fc3edc9c233dc5fca067. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRW019300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7cc1a994781d4e33925c711a2cf30b2cad032257b824c0566cef2cb4c1ac7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA560653258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff696beb101bf91428a2658645629ec201177271fad72baa391db0ca320965b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA560653260.
To tram to telefteo: 28 Arhontorebetika Tragoudia, Vol. 2