Agathonas Iakovidis (; 2 January 1955 – 5 August 2020) was a Greek folk singer of rebetiko style. He represented Greece in the Eurovision Song Contest 2013 with Koza Mostra and the song "Alcohol Is Fr
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 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 0xa732d81adb4edad322db490d424761bb3c032f0a2dc9c3ef23c5492bf8d69ea3. 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/fe5072df-44b4-4013-9bf9-4779782d3865.json and https://artists.proofprofile.net/proofs/artist/fe5072df-44b4-4013-9bf9-4779782d3865.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 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 0x86b6c97a59a325d751d601b058ade31080378a8467716df59191fd5557a8a2a5. 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/GRER19800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168372733d05c8ff2d046a5fe72a67e84842f24a37179e7cfd56e4d49b0ef849. 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/GRER19800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5886da4b338047873b88e48bdb9d52c7f1707a98ea68a5b9998d2ef5c03cf8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRER19800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958dcfbe9874be8d3f148d2b21f111119455af49b90f92a46ba0e96a49b0910d. 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/GRER19800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b6c97a59a325d751d601b058ade31080378a8467716df59191fd5557a8a2a5. 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/GRER19800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf2f34f77717e03257fd704aa846c3006098fe8874741ff482e98fcea45c20. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GRM018200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3c485ccebb6b62ec6d748ab8a5e0b8e6af70d6f471882f7bdf04a312854459. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/GRM018200483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a5f3537816b723de45df33f72b789942a8431b1777f7fc7fe8e4599cd5cf85. 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/GRM018200487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836adb3326af1f9ce1f93229aa1368ad2ac713b963c127f265fa0c037f18a4f6. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/GRM018300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8293fb5312a9bbc15e76127c5d19fab5552327db9a0376388b777b7534895f05. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GRM018300067.
O Kostas Skarvelis Apo Tin Poli Ston Peiraia
Ta Belederia (Spania Rebetika Se Nea Ihografisi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e6c79d6213e9a5735fb4bc077555ad53289bc0a9ce5df532f560b936e9e1b5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USA371642077.
I Got Engaged Young (Mikros Arravoniastika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48402265163315519d391481b013a519bafce6de5d601887d62150eaf17744c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA371642091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ba1f09c68c2701d1e837ad44d01c2aed00f7b15e9d5a20e24e02d18672b95a. 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/USA371642095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43f935e3ee23eea38b45d81736be8d752b7d2477931c080cdd82ac2c5356a9e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA371642099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54da00f487845fb38eaea1b986f9f2eb7b4f9844d3b188fd1b04541f88c276f3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GRFM10700231.