Koray Candemir is a Turkish musician, songwriter, and record producer. He used to be the lead singer of the Turkish rock band Kargo. Towards the end of 2008, Koray Candemir and Serkan Celikoz decided
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 0x168a8235e2e1c2dbb314608b8dfe606e23d9bb98aaf6e5d047fc0aaa207c490f. 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/bf028725-391e-4867-b841-40cd7a9960a2.json and https://artists.proofprofile.net/proofs/artist/bf028725-391e-4867-b841-40cd7a9960a2.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 0x30e72b7310a0c78a2d7f9b596c7a9d0ec48e1d1690629d30dee7ac822e4f387a. 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/TR0531304574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99260f7560cd1fb3aef7b7c97c1b0cea6d0c0287507ce62f118f5cb32897236d. 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/TR0531304575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0d9dd1610934bfd8fb0f199773efd5f36aaf7495b618af9e188c376cc59aa6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:22Z), 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/TR0531304576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd64b23338c836cbafb6fb2b9f1081e97d37f1e85ca620e9d68c4a2e9501c525. 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/TRA161300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7753dc1ebdd9e8906016fd01d3d36f1a36a26c89b17ba6bd8e54837db058648b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:34Z), 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/TRA161300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08a9265e00a90f511fabee047f2a825b0b1377b8a96d5899887ba4d5126c299. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TRA161300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05a1d3ab50a881748c5142a1b9ad8c4164f49738f4eaf275ad6a6f47c29be5b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:38Z), 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/TRA161300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e7f18cd3df80db9710ffaeeecccb702f03d6068cd65128bb3bf70bd72fc11a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:21Z), 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/TRA161300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dac38fe7187c7671c2b1c787881073ab25808d62a1edd718ad208f427dabfb. 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/TRA161400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26383c182f845152b7e8fc2a2e1bb4c4145c47c86401bd1353f755ea3f6b80e1. 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/TRAKF1610086.
Güz Defteri (2020 Model: Murathan Mungan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1d46322b9491b1e7bb23688b8e93e12b88b278e82d6cf408424ff75fb95ccf. 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/GB9GM2100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c98a817412fd15fd5b3570c45a47e38f344723f556574a73be10432924e6f9a. 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/GB9GM2100240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f1ee0e5734f45ff4282dc9ec833147fc9643bb8d0d4320bd815d429ceb2e8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0280603058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a2b9b03a41b1f6bf33df08c1308c6a36ef12cde5525a3d9c71f8a903f60a3b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR0280603059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133ea6d1653368aa810c6a589e7cfe049998368400c59c8a4c2a35a20ae4acc9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TRA160400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1cb8b71e79e06da7b52b642686ae343ff3af08b1848fd2a5952550b132c459. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR0440601601.
Barda Film Müzikleri (Orijinal Film Müziği)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488c20ce5ed4568d203096d8dc3f0e8b694430fe8cc3e5c48593d937719f65ec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TR3520700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc948d747ea06e87eee9d39c681da6a4cb34c6a5ac1490f46cff9379cbeb07f9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TRBDY2244402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc948d747ea06e87eee9d39c681da6a4cb34c6a5ac1490f46cff9379cbeb07f9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TRBDY2244402.