Nikiforos (, ) is a village and a former municipality in the Drama regional unit, of East Macedonia and Thrace, Greece. Since the 2011 local government reform, it has been a municipal unit of the muni
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 0x3dc02581387017c8e51dd6a841618e7fa3ada34890f651f86783c5446a2ceb2b. 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/c34df047-de0e-4c43-b5dd-76456484981a.json and https://artists.proofprofile.net/proofs/artist/c34df047-de0e-4c43-b5dd-76456484981a.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 0x1e6d433b3ac42f6b47ef6c48c0984e49167e536e6c13dcef7ddc9cab65073df3. 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/GRHV11000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f010c325b7891ab590fed1bb84558340309610a5fefd6baa278460a249434. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GRHV11000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368f58361ca3ef6e5d17557173894e0fafbc862cce287c1534ffc5e77ed3ddbd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-27T13:18:07Z), 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/GRHV11000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651b8f22ee4201e58dafc2969159b9cdaadd7563a19115c9fb933e86905601a6. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:07:11Z), 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/GRHV11000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1c451d001badad0a07e48f0009086e58242b701bcfbdfe5717660e862fb430. 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/GRHV11100270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6ca62c836cc93231b430d71868a592b61ac0b7668dee6c603bb7206528fcf9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:45Z), 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/GRHV11200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40de7336c7e8513d8abe3a9ef2c37d44a7adddecd5cb67af1ea25d1f253941f. 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/GRHV11200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29da25a370d2517dcca1d70e53dab22e1a45f7a8460a5318d16c67aa3d3b8156. 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/GRHV11200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7620f5dd3540d56cf2d48cbaecfbd401b0b34eeb4bdb95c3b98851c23a4a1fe. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:58:34Z), 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/GRHV11200179.
Krima Pou S' Agapisa (Remix By Silentman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe193d9aa839412cb7bc54e802cef84478b9774758c70b18ceb12c16984c385b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GRHV11400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b051c6528e706bd2c0bd33f3b3dabc6aac616d501f7ac99cb27aec958b637. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GRHV11500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde618902d0ab839f0351c9c577f905609e0eba0ec5dcd718c50535d318eb306. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GRHV11500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e29597a2c815de7f528dd60629a1b958c8974f1b01bccf0597ebf6961e5044. 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/GRHV11600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6d71fcefd4849eaed313ca4f4176038165dc28aaa7acedff20a81555a7562. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GRHV12000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e56ae9f8dbd2112f4b3921e8466d94a1ec6ef2e413e5c038a5a8aaaebd7d0a7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GRHV12000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee93581f9ccb6ef959be881c51fcb9aec492a1acb31909ff781446912926cbd4. 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/GRHV12000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee91304a52981bcd4c46544323426ba104c1ce8772584ae79bfefd6609962cfa. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GRHV11900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17846782403f14de4e7f3b8e159decf555871aed7ebac3da9887cd7589d0fc63. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRHV11800023.
Iposhesou - 10 Years Anniversary Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02803beeaa882482b319e98959b30a472510572d6fe7d77433fae5d32683aab. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GRHV12000299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7273cbefd713f5b11816ef634af51e3ff6fc19a0b8b9fcbe7afece2282f7a6. 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/GRHV12200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27b27a443d7f2547cd6e0d74ede00c14f89f5dbb69eb5c70b03593fbd47b69e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GRHV12200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef7a79a13a956bb9574d74b6f80fad7b0f351896615353cd10853ca70aad51f. 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/GRHV12200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835a1ab8bce00c00dc2ef36f6ca3c62e715de9b88d2af4a1bf3d03108d9585ec. 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/GRHV12200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b4672808ccdc077e6d8b48a783987f6d5b714d803676b20aa5ddc438f339fe. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRHV12200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0f668e24941ffa0f745db7134dbebcff62767bd1c44826b4bf02ce914f6c8a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:03:23Z), 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/GRHV12200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b8ddfcc3a969c2f9d5b8d3d657b4d9693ef0af98025b8677f054ef33911c25. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GRHV12200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8ba70dcf245a456edabf2647f160795b3e445b0edd2317777ea4e322895c92. 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/GRHV12200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48597e45dc94ca9e1e9b43913783375162f78d8c0b9d2d11dc6cc97d7a46d04. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GRHV12200365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26f6c08d7fa1c3d6fd492e762f26fa43c3e09da887ee6dae77175766e21b7be. 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/GRHV12200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be2cb0e47d14ce63e0d8c49337f004c064129ffa44dd3b6fa75e495f3127689. 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/GRHV12200756.