Kayahan Açar (29 March 1949 – 3 April 2015) was a Turkish pop music singer-songwriter. He was an accomplished composer, consistently ranking among the best-selling Turkish musicians of all time. Kayah
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 0xf6b689bcdb3b9005da2e0952cf7171e136123d22741f65dfa00ecda0b7ed5d25. 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/427f3706-bcab-423d-9495-51cb17ce28e0.json and https://artists.proofprofile.net/proofs/artist/427f3706-bcab-423d-9495-51cb17ce28e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Benim Şarkılarım, Vol. 2 / Siyah Işıklar
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 0x593dfe964fce1e9d443799ac8c7ac63765efae0f24b5a854c884689524383815. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TR1290600287.
Benim Şarkılarım, Vol. 2 (Siyah Işıklar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a50f644cf970e5fae3fac62390fb2410c3f39af4fec88e65f54f42a56fd933. 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/TR1290600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a2126e58667bdecd0b900923ee9e9cb5590dd359081a41154d374514918d8f. 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/TR1290600312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26735c905b9b410a7f2d454a6d36ae8dfbddc34158bf502ff6500dbe69c006c1. 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/TR1290600315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1c8ff55496a9fdef5a31749425574397e27c6d0a384e0e6e5855869b7ff296. 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/TR1290600318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095ef6a264c481446891207665a957317ed771f980d2d5e36e11aa05858a4504. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TR2421000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda99a8ac6899db0334e8a65a78e877395de6d938d044ccbd5999edcbaabf0808. 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/TR2421000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd38395aff5085a0c8e136addc3f6ff1a28bfca0b839bdf3926e377d1d00c1. 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/TR2421000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d88130c866759ccc95682f57264fb149831832e5eb30669681b0a3fc9ae5f. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TR2421000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aa1e69b3bd0e798b7c70a735594b78c76467042a4e6a5d3ebd296d2dd040f9. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TR2421000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482d284985a9f4d636c73678fee42d6f1d77273e1c269c720d665ca0a629a4c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:17:36Z), 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/QMDA61893454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84de03fe056be7e4a453696503a287ae21f5ceea76ef0f25235aa2ef4ad1dbe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TR2421000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddd049f61b9a00a122177a3de48fcb8ce87c4b6c4fc666d65648d60a75b31e6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TR2421000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cf4c0e271c166a07381e6f8a47271a4e233c20223a0ac91a6fedfe6ae0568. 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/TR2421000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed0493149f529d2f894c0aaf77ed9140c7fa3086258a8fbb9f4d384dd16ad36. 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/TR2421000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd2ad006e1d6aa503efb4eb6ae19519293876653be58e565786457edde3a95d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:41Z), 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/TR2421000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9244bb0060fb3dece1642f3c16edd2d88e84b87333b21c3cfadfc7ec6d2c64. 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/TR2421000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93fc0a4fe5afcc3a18af54cff1ad6db3749413dab2559383d5b60fa1b0eb0e1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TR2421000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3bd6dfd9b33e3520f854398c287695a41c958f2e9f4d9132e10fcb1be02627. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TR2421000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e74e5bf0609c2cf699c8180d375e1585c72c527d1365ca2feace76df4c15fb. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TR2421000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0314c02119dde9dc820d0d1a11e685ec87ec5ed9f39c613af86dfd69cc8f5d44. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMDA61893457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa561322b6a8aa0af1eecfb7f03882b943628f664de36803771776d2da4e755b5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA61893458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a92085eb789282bb09023f463e546d015a2a7c4c5fcb8f7fbfd66bf6908aa71. 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/QMDA61893463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734460def9cacddcdb06da1bfcf30ea37c19986ff3cf6f84ccb6ff216d307344. 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/QMDA61893464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdaa2ce1b69905fac0907afa3bd7036f48e27203a69cc8c4833e9715cc31c45. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMDA61893465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4c843162de4cbd391d7938669a75154e317acef16ac019fe406b314bd998ae. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TR2421000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc117dbbfae709656c001e5605063b88d3109748c357ffeef6d906dff789b90. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TR2421000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd904faae92b0f6dd75b95ebc5f795ca89e7355cd246c83f63cd04e71dcb989d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TR2421000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47addd249a10957cdc523292d3a3044a26bad882a1ca83193a08bb18768e60c1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TR2421000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003b3fd91d05b0d1a9bf56d76c88a82f2f2c8572d29c58aff7a0b4c8e7779787. 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/TR0010501426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4c285dfbe2da25a659741fdc98cad2810bdc0ad8d8edee93a8adc373c36ac1. 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/TR0010501424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7b208041a61d3f4443c13000a066b346e78abb08643bd6abc4f9e04daaa1ca. 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/TR0010501425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f482307e43d5c2441e4f127277dff8f4e312aa7df7d84c1d03a1f877131160. 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/QMDA61893456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bb111cb880ff0a86fa42cf8c682c3845ab3a92328a5efb4280d8f7cd194432. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:26:11Z), 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/TR0010501427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee7ad0603a51c8dbf9a51909da8a18d261de451f417f9bb424c173cdc61334. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TR0010700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa118cd64f40fa791b290a82722f6c86c5f8957e181733d42d89a28342494ade7. 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/TR0010700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3736024f95aed82c3e701c58701aca3755c71904e46ae30183653abf9b95058a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:27Z), 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/TR0010700125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b6538d19d84d8a1f9ddedcbc0d1f996330adaf4356beafd2051adc089a8e8d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:43Z), 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/TR0010700124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb699ce88e08498d032de408a518f0de7011700dae5c8eb574e34065580ffd7ca. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:40:22Z), 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/QM4TX1872225.