The Pera Ensemble (founded 2005) is a Turkish early music group specializing in music of the Ottoman Empire. The group was founded by oud player Mehmet Cemal Yeşilçay (b. 1965) and psaltery player Meh
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 0x8467631b2ec43902a5e99a7c1ea3f6d53ab3d15685d69da9eb9bd67b47672ef8. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6550d40b-3b26-4eff-94e8-4da2c3f867fc.json and https://artists.proofprofile.net/proofs/artist/6550d40b-3b26-4eff-94e8-4da2c3f867fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
One God: Psalms and Hymns from Orient & Occident
Le Bourgeois gentilhomme: Marche pour la cérémonie Turcs
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 0x8dd2f2ef350109c34ff91c78364af679fc06982480c37d5573f271bda9da31eb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DES380020595.
Polifemo: Alto giove, è tua grazia e tuo vanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb140842228a0b22361c946ab200883189842a83e37258da0a7f5747e270bfdbc. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DES380020596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c09d1c5bb3ab1782d77f192ba31c01de21914cfe039e8ee18574a5a87f4a185. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DES380020597.
Eviç Karçe: Geldi cevher tıĝi ateş barına ayineden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793c05b4326207334e46544443661dcf801a9a0888f115a93be32ff54a59838c. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DES380020598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d03f431fb949db487c14ede0d3899a3f0963f72d5572299302dbb40380d3e0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DES380020599.
12 Violin Sonatas, Op. 5: Sonata No. 12 in D Minor 'La Follia'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101a859ff0c2c3cc4ea6190d726526b0d2eeeee8c6328a52573d50a361282ad3. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DES380020602.
Agrippina, HWV 6, Act 1: No, no ch'io non
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741e14dea478fd577e3e6337ebf0f46ee832855a84775382abd55252e81c8d94. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DES380020608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974e0028cc54f6dd962ee4cdec7e864089ba21f425f6f29bd26eb9b06e73bb5e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DES381306001.
Halel - Kyrie from "Messe de minuit" - Axion Estin - Kyrie from "Messe de Minuit"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332783d76461d708eb7cfb0a853b5fa27fb5942e0a2cbfb89b372fee02aa11eb. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DES381306002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939286e09c3d9db01225c55ee775ec7f8f3cca14ad5cfa379c3b1cfb3d15fd65. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DES381306003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8529a1d5d6236991310b50f23531dc5b4da958abba6991832fbe3e1a68a37ed. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DES381306005.
'Al tar'ayk 'ito - Ey risalet tahtının hurşidi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7a2c7333da4b10a27737cd5cb79373139a109ec9a7af8fde458018310868ce. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DES381306007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04867e06f7871828873bde95a8e7ed7631077aa29c59742bc1a4f1a683257b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DES381306017.
Ey âşıkan - Gönül hayran oluptur aşk elinden - Hicaz İlahi, Allahu Allah Allahu Allah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185857a6eb9761a8c4a3a908a683c8814e2879d5e0bed09da9896c1fd04c6bcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DES381306018.
1219 - The Saint and the Sultan (Francis of Assisi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928219019ed5153e0c672d986716afb219862b4d4b7119faf6ce94bfcd59e9ab. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DES381930021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fefd1833c3d28161dadc242de11621a36552e12a505e2fd487cee6d544ff2f. 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/DES381930027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9481a7479953bafa5495c8247b77fcf02aee330fad79131bd26943de6991c67a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DES381930008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2254e7e46f3e7dbf28c52f97476a2400007af43e85638951046871a4cbb4387. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DES381930032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354cdb1417df16329656768b5022fe17725a41850ae201b4111d8fcac1e8bdc2. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DES381930034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b42d5be2631df302544ed1ae5e3cbbbb017b1a006a1aa1bae9577b9177fc10. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DES381930018.
Sultans of the Opera (Dream of the Orient)
SULTANS OF THE OPERA (Dream Of The Orient)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc887a0be3fab0e1da6c540bce36f7d5bc1b7583b7f23bab7c6633aa4b9ddc2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEFY62400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52020b9e9ab1f121b95ad82e6370acbe32108bbc2f7d04601358d94aff6916. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEFY62400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7928f32c0c24b0a73dd272e538286e27277082ad8640fdf331d0072ec6a221. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEFY62400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7270abc2cea57b0aaed41105cdd08537d6c771749325b8b4be96649d582c5323. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEFY62400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae19750849bb69bec6c13cbefef0a638ad02c7f1ef5fbcd1121ec64ca6e8a96. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEFY62400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f43dc5cdb849b7350b6871613503f9c3a9bde3580430da8066fc1630f6f8f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEFY62400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac22dd331dc5e2346942e54cb69c5369821a987e3ce5618cc99902d10190c78. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEU921605513.