Gökhan Kırdar (born 2 June 1970) is a Turkish musician and film score composer. He attended Yıldız University in Istanbul to study architecture in 1988. However, he devoted himself to music and soon
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 0x7dd98046f2e5964b066548b53a63ed6ebcab165823b29abdbc35e3da7af2bc56. 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/ae0ccdfe-efed-4450-b37b-e0b56b09af2f.json and https://artists.proofprofile.net/proofs/artist/ae0ccdfe-efed-4450-b37b-e0b56b09af2f.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 0x5eae4bf6b835d858975209ab6cf1b703969592bb72a0fbcf3727fc1f4f091dc7. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TR0160500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e54c72ec4814de9a0ccd5b0ae337aa93c8f4cd26225f73caec28d14276a60e0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TR0160500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee69b9d3bcd1f20403bd8227af5a373788e8ce2faeb3984a43aed99ae257fd96. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/TR0160500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1623b60b0b6c42d64469b481a1af4da4c61b980580863be01a6aca092f4994a4. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TR0160500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c7d88907f8f8bb0165eea11cbd10ba244d1afcc159797048262293a298b686. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TR0160500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878e9323ef58072d213bda6603563585f3e458ecd056b4ca1a317e7010685bcf. 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/TR0140500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cbce5f3f093b23876cfb68e82bef9b4648525927a3dbf2ecb25c0be525fbe7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TR0140500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc8333e4f249c1f019d559232fa2c31377feee7f737bb547b6b3fa16a3f72ca. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/TR0140500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d64dd5930dc7614df719417ea8a62f4afb5f8350ec3d3366a366199eee01e. 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/TR0160500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43735d0527beb0497c08611ffce598db443f56b26b4a8cb71c6593addcbffb4e. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TR0160500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002a1942477a9c27b082dbc3c79f2723c5002da3a94c1720c02e317510303f94. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TR0160500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb3b1b6efe619beac14a8b9ac71e76cbd4f106a784ada0eda2e9f60c1d29ef0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TR0160500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44a8f6db956e3a597ff26c379a2d34936dd6d62264f9e261e9cfa103615b980. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TR0160500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faba1057ad0a217f8d4a616e5c585943ce3279b36fb80b8014ad3ebb439ec4c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TR0160500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592f3d7218e90fa5fed1dfaa62d35004f95ccaa13c62473fd7cffd7d0438df4. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TR0160500060.