Alper Tuzcu is a composer, music producer, and guitarist originally from Turkey. Tuzcu has released four albums: El Jardín (2025), Macondo (2021), Aurora (2018), and Between 12 Waters (2016). His musi
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 0xc07998e56c83e7c699e26cef18ef66ba4d085e7e12dcb58b7543477b47b0f305. 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/989c9e2b-d6cd-4611-a1e1-8485eb51afd3.json and https://artists.proofprofile.net/proofs/artist/989c9e2b-d6cd-4611-a1e1-8485eb51afd3.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 0x5d4d5e355c3fda96ced114f25962a435be5e35d9bf15d1957c7e2dde886b7d86. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USCGH1621835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401f0c003e113d768abfc7f7ccda0782bfdcb86b38842f6ca51ae4f3b8b30e70. 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/USCGH1621836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd8631bd1ab5620fdb744ed3eecc540596942484caf7b80fb0f3542adb69a83. 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/USHM91856803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293dd27c7116ffbd39b50bbfafff27c0b0337443d51cfffbdc6b66826f626e2d. 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/USHM91856804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df9a83660b2ab6941543e5de883fa9fb0cd0e0be67c1d0b12fbf178cb395f0a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USHM91856809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098675fde7778f454ccf9458578f424d5634b65082ed0d534d84bf276fb2151. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM91856810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85405e240dc34c616a61869c1d5e20a8b6c6979cb480943fc15ba6e93932c30d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM21945949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f829558324abdc38d5f7f07040c8df2a4fbc1f42bd135dd8ccb048f0869eac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USL4R1943591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487a2842e6319b1c1ee8e009521e53814f1961ab44a9ce4c2572ebdd57c3beac. 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/USCGJ2062681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd722aa36268cd96624dc005aa0f37e853256f7ab65bfd980939abb66b40ab823. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:31Z), 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/USHM22039257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688e6aa53e7185d18c583be8323f756f5171af17f461d256704e98d88481a542. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USHM22039258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84aab5306a35287e76eb7274a815760cddb301f7f8c236f8ae88fee8fecb927. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM22039259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92091dc4b14baf9a787778b6165b401eef29fb223d1b746e34029eb4ca909025. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USHM82154099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d6c10e72c9f2ddc48849ac9b3dbdce2b035d5bba8dd4182e0e9ce8ae22df30. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:29:44Z), 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/USHM92213092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2461b43a63327685748be91faac1c032e403fee6600ecc57c11a13a2a87924e3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH2368376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781fd02374a319f4f2bbaa53aed743f67cd63ad3839065914a31d8c911c4f382. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE5752479173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644c9569bd4749cf9bb127c131998954fd430e3b5bc9cd894d7f9b3a3a543eb. 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/ES64E2507020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f8fcf39053832f2edf9f7dc5ccac3d4fcae3b760c0d0d429bb72e5cdbc6022. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:52:13Z), 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/ES64E2504760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc97478dbc829a4741f71b31325b403029ae2ac735e41e873fe3ac4dc78c7c0. 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/ES64E2507014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e9705341aad16e6ffbfe3d433da33962f6fb4dd7bdb095a77637ed00a7d757. 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/US6QR2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d000404b25c58506eb0386558933b81b4f91b2cf1a4c973955d913c8351d7f3. 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/QZ5FN2119282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e9705341aad16e6ffbfe3d433da33962f6fb4dd7bdb095a77637ed00a7d757. 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/US6QR2200035.