Mahmut Orhan (born 11 January 1993) is a Turkish DJ and record producer. He started working with music in Bursa at the age of 15 and eventually moved to Istanbul to work at a "Bebek" nightclub in 2011
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 0xbf92c2558c88258ca2673d22b353f8d96a7efe8f00e22ba23fc9597f7b93612e. 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/bd024200-d226-427c-a2e2-4607f9bc3377.json and https://artists.proofprofile.net/proofs/artist/bd024200-d226-427c-a2e2-4607f9bc3377.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 0x07558bbc28ddbaf72dcf411c1ffb9c89eb1eab309b9621355f43d7b5d3a5efb2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUS12100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3224e22c3b3a85c656067c23b606ce0a041621bd8431179b6ee100c3d1b52731. 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/NLZ542100863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e62cfb551ca36fef25201fd1a3d2a95e6c89d3ec8d654a7a6d3bf11eba8e81b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM37X2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e45c871fd8e20f2fdac20dbf7e1cecfe1a79f8273a2feec8c47d41e097fbfa1. 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/QM37X2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a99cac8951f0d453a7fb1548056afae649d3791781b9c2c8515cf46f28a16. 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/QM37X2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a99cac8951f0d453a7fb1548056afae649d3791781b9c2c8515cf46f28a16. 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/QM37X2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a99cac8951f0d453a7fb1548056afae649d3791781b9c2c8515cf46f28a16. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM37X2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec390f5a4408d167e0ddd19dd96820476272f4e470299d6275f734b821ab6078. 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/FR6F31460210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b4118fd1cc1a94889f67e6d29efa2829b317a581fbd2fdff554a3212c880db. 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/FR6F31257410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c540ea9dcf7c868fc9d5e412282202554a6f07c0cc5560bb9855ab635877b44. 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/QM37X1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db7f7869a95c60816fe7b72e4d336ea573d1cbcee2cd2e9ed80c855e431b3c5. 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/QMEU31601252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf581e693e6797dbeb798a8bb4fac97af8d055bdd0747d21d7b71172645e4e359. 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/USUS11700151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420fa52dd1de5cd41d0976ac81b69fb9f3fb1dfd6d987366ff9a1d3cd958f2a9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUS11800083.
Ibiza Sleaze, Vol. 2 (Mixed & Compiled by Rob Made)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5183efce69b0111464610e6c1fde13fa3c389bcbf90e5d8f9b4c1c4d6b8431a6. 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/GBQ2F1158723.
Herneise - Christos Fourkis Aegaen Sea Mix
Obsession Lounge, Vol. 9 (Compiled by DJ Jondal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe2b9e5162365fe9371deb6c1c78a580ff6aa7a20d76c7c414c818055da76e8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEU231600800.
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
Ibiza Sunset Dreams, Vol. 4 (Compiled by DJ Zappi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daa6ae6267e3bfe13f5a29d10b779cb9a5c24f075f77f143a5126efa65aa607. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA2P1621229.
Huvafen Fushi Maldives - A Decade by Ravin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697ec5421f58f34b1e43db9b6c026dbd6bfc579e793744d6399e3ba10b402ac0. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/FRIDO1401270.