Hasret Şükrü Gültekin (1 May 1971 – 2 July 1993) was a Turkish musician and poet. He was murdered in the Sivas massacre, along with 34 other people in the Sivas Province of Turkey when an Islamist mob
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 0xf31caf08adbd933591414b37c3188d25261dd79aec48a83de15d3e493dc02450. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87e2d614-8648-4401-a6d2-155939c28c37.json and https://artists.proofprofile.net/proofs/artist/87e2d614-8648-4401-a6d2-155939c28c37.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 0x11793d80692138e299e1a67bd9a8b9bc320c693a19fbd6d52ae9c92385483c95. 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/TR3610600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea08689288630cbb3b695b6433f2efbb76f269bdf0c97aeb8104befbe0ce3a7d. 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/TR3610600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271136e2e94b049eb56c7611700e90a809cf1803387616b7c6f4aedb4d2a6ce0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:16Z), 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/TR3610600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7199b5d0f56de2877d21dbad3ef05d0717b49c91012424c08c01eac6171ecd0c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:17Z), 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/TR3610600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9b24e324ef53e51feaf4f15843abb2938c3cd25a17e3edcf09e2298fe0400. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TR0330600144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb64482c8b2c95b8c45c15db4e25e6788128d7b495dd03c238c25c79c398e62. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:49:52Z), 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/TR0330600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6902ee6e2fd64fa78e45e2785e69170032df312ac03c700e965b25a1336554. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TR0330600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b266b669297b52420eace0621ba34c0ab6e2df85f6bcc0677f7633a62906da. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/TR0330600146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e69d590bfafc5cad347273a6f3a1d2e2e169b82ed7a375ad1af999e75e0b15. 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/TR0330600153.
Rüzgarın Kanatlarında (Yobaz Katliamı Şehidi, Seni Saygıyla Anıyoruz")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0ce70cb39dac99eb2151a62a6b993ec812c031e572146796f9e066fd4e1e9a. 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/TR2180707603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b1d3f054332033e3b5e5e3b027efcf280b9a5de6644c2a6b8f0b39a3381df0. 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/TR2180707604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc3134e0428bd2f3731ef56a5f31e9aa28c671af4a1d28deced8cb19cb9e3c8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:21Z), 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/TR2180707607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44491042d78aecfd9031204e242fed71eb54d96852655cfea374dbe44eb10f04. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:42:07Z), 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/TR2180707608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbb1b32ecb79178779c87b421fd771a88f51062a0982944b6998aff7ad557f3. 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/TR2180707609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8c1d3bc5a2185e42e738dc52ef7733fa2d323b453c759c9fce321ea1b9f0b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:29Z), 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/TR2180707611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f3a05b7bb666e6e61fa6342917c09da8fcafb0bcf3ccfd10d1d69a7a792a7. 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/TR2180707612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87c16fcb1b63baa413735863909eba9992cb943aba506692edab35e03c02688. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:07Z), 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/TR2180707613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1e622fe2ef23407e50514d6e4eb125d168880bbf23bc5bccf9b91dac619cde. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TR1710600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad18e42f20e0879771566eebf52ca6c020d7809399de541c9a479765458a97d4. 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/TR1710600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d611f7514ebd394a5063dd905775b2f9f71a6a3ae9e81ab2ff0e340c98226. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TR1710600116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b24c596f45d2c40f583ac9e785dce7d5069ebfdfeb013eed6ccf4884a98595. 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/FR2X41776905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79201fc756435d58c1f6ea627a7ac67c0a6fd77ed2ceadf4d6547f6d3f15934. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR3610600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6caa897a08871fcb718e81d10141b658cb7f632a6527310af401921b9cef2. 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/TR0361300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aac4eda2fe331a7c9f82e32f1aef8eda316f0823b9ab8b8ffa73de7c883268e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR0361300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e964acbc3e1d0b63be37ab0d6ae25ae3a5d968644259eabad632821d0baca8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0361300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b53a5305e3831e513a730bf29e115a9460223b12aac455aa1b544b1746d033. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0361300309.