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 0xf057b671f66b256cc1b23c47c5cec7ff476f2ae0a39ed46fb76ad18a845b8dc1. 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/bc5b70ef-cd2d-4e6f-8c7f-63e300b8a71c.json and https://artists.proofprofile.net/proofs/artist/bc5b70ef-cd2d-4e6f-8c7f-63e300b8a71c.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 0xd2c14ca4fbe081782785774a29862de02451789d3e9e5ce9f8fe3f0eb9ef3ff7. 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/QM6N21958863.
علی قمصری - چهارمضراب بیات ترک استاد فرهنگ شریف
Iranian Female Voice Festival - Berlin 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ce73b0c2c77a7938add87f846a892ec04593a8bde8cb2cc11d3d513f54c64. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:56Z), 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/QZKDK2182086.
Performance to few melodies of Fars Province
Iranian Tar-15 (Kangavar city - Anahita Temple)
Iranian Tar-21 (Sanandaj - Khosroabad mansion)
Iranian Tar-18 (Kermanshah - Taq-e Bostan)
Iranian Tar-27 (Khouzestan - khounab Castle)
Iranian Tar-24 (Ghouchan - North Khorasan)
Iranian Tar-29 (Neyshabur - Hakim Omar Khayyam)
Iranian Tar-32 (Torbat-E-Jam - Allah Madad Maqam)
Iranian Tar-37 (Behshahr - Mazandaran With Ostad Eshaghi)
Iranian Tar-41 (Yazd Dowlat Abad Garden)
Iranian Tar-46 (Kerman - Citadel of Bam)
Iranian Tar-51(Bandar Abbas-Galedari Historical Bath)
Iranian Tar-79 (Zabol - Dahan-e-Gholaman)
Iranian Tar-77 (Hanabandan in Sistan's culture)
Iranian Tar-76 (Zabol - shahr-e-Sukhteh)
Iranian Tar-80 (Tehran - Mostofi Al-Mamalek)
Iranian Tar-84 (Firuzabad - Farrashband)
Iranian Tar-85 (Firuzabad - Around Ardeshir Papakan Palace)
Iranian Tar-92 (Takab - Takht-e-Soleyman)
Iranian Tar-2 (Tehran - Playing the tears)
Iranian Tar-104 (Isfahan-Sarhang Pallas)
Iranian Tar-105 (Isfahan - Ali Qoli Aqa Historical Bath)
Iranian Tar-107 (Mourning for Urmia Lake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e38da8e1172fc7136ce1df21f2e44799b6ff95398bd0d9b8ce05aa7fa5baa19. 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/QZTAS2375456.
Iranian Tar-111(Gilan - Titi Carvansary)
Iranian Tar-112 (Gilan - Titi Carvansary)
Iranian Tar-113 (Karaj-Soleymanie Palace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556c31d1202f61ff55c4525f4be36b26b90c7e59430b24f8869dd4e094ccdd5. 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/QZTBF2354820.
Iranian Tar-116 (Perspolis, Hushyarmast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d0b2032f4b0387d520b804eb3af9b5710d56c96a9faede5410ba5daa9ad21. 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/QZDA72460853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3189c022fc128bca95e7a94ddccd26a47623447045a32f41ac2d8ca7c1fdb20c. 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/QZTAS2475161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bda1f2c912cf31c10fa47cb3a8d6cc39b2cd12ec58a857890c94ee81ed7335c. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZTB52454056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03029d1055966379098a4a982f9c2c031e1145eca5b83a937a093eff35439fb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:38:25Z), 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/QZTB72459884.
Iranian Tar-137(Sa’d al-Saltaneh Caravanserai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b230cac688c1be6eadb6bbc38ad4b1f843399138c2c5861efd2d5001645254. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:45Z), 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/QZTB82466745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbfc8d78a97d9ccb297676cce6b0fa87beb6eea54fd95b4d9cdb879efd72b4d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:12Z), 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/QZZ782446857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0019f5b872c0f3073f2b283c75bad23406fef70c182dec6ad090d4c9ab568c. 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/QZDA42585134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9dc4415eccb6f4440593fbe7311d85be2947ea69dcc6cf02a18f0bdc71f2f1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA62541109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8a71a904057388c4c551025f10c4e5e11cee6f9c75005472d3e4e852a0103d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES72552534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce1d0cdbe0184854c490f9aa62a0231f31d7db53643a7ff27b9cdc23fcf066. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:56Z), 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/QZHN52558197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf84fd5ee979313bd105413c14032681e4cb16e16b1b48ea9812014ce23ff0f4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6Q2573348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd65584274b605e4bdf921bbfe60b48bc9ec4cf74a0bc85f71353417042017. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:24:26Z), 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/QZMEP2564499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c9d25d173e3e34616af9941890928133404541b3b7e2197851dbb4300f753. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:06Z), 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/QZNWS2513075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a09600773adeb0979256cada88baf6bac750ce9ad4e146060b83623325fa1d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:45Z), 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/QZNWW2573418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec09e26bd4438ca032ae02f1fd4878b5c1d8f90e937aa8d9a275ea140e49cb1e. 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/QZTAX2583541.
Iranian Tar-160 (Katale khor Cave Zanjan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04725de1bc20eb58e83d8c39c460b84b5540010c660b52cfad77ee20db34d0b6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:34Z), 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/QZWFE2521465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c10afd6d764b39cbd142eca7709d0fd4777b4d9e04d494f6e38b964c6b4ba3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFL2520407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99303d94cbcf8f14d211b16bc1cf0d2065db48d4e4fc48178986575409ca6d19. 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/QZWFL2522319.