thumb|Miklós Kocsár in 2004 Miklós Kocsár (21 December 1933 – 29 August 2019) was a Hungarian composer. He was born in Debrecen, Hungary, (son of László Kocsár and Erzsébet Borsy) and studied compos
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 0xd0dd959fb6e2472ada91e9454dd6bf65e9e1052d4f29972ea54a5b0da1675164. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f49d73dd-ad23-4dc5-87b8-e0b59171f1b8.json and https://artists.proofprofile.net/proofs/artist/f49d73dd-ad23-4dc5-87b8-e0b59171f1b8.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 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 0x4c4dc1036ccb4dcf449138642cc5be22509e1cc00215de1080e686da6fb4ceee. 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/CH0041200870.
Soproni / Farkas / Kocsar / Togobickij / Vajda: Violin Sonatas and Duets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784455392c92737d71882f4866cbcca749e7bf0f36439689da187e6745e3e7f1. 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/PLR401600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f170d24021348e608e1f62dc9e08e8ae6d41578f2d81986abf6b504f48f5f04. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PLR401600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc52cf9b85d3bbb282b4adf7665c853545df4882aab15edca63d908e6f442b2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLR401600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32c012695734e22027cb65c0a08ff9a006032d7c435605534121febd70068db. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLR401600324.
Magnificat (Miklós Kocsár Sacred Works, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf370d86c0a2854f8b38670341aed76cd8af590fb87ae191ced7f57a2e6d3b679. 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/HUB281900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f94b1e04857b554c5abec3edc49afaefe5d5c4bf37c9861397e5083ae7c23b4. 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/HUB281900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f880ab9a0ed5479fa692763de1ae41e3b869f7b9e3efd16b71785df9866b942. 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/HUB281900132.
Missa in A Major: IV. Sanctus - Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28329bd5c180e4f146c97e73da5fe0e8beb52d62af1106c03195c3d52774a2ef. 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/HUB281900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47441b0bffaefc7dfda02ef79c065075990becb814209e482fc1889e737ad6a3. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/HUB281900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41061d8190850d506b58c90613168cebaa0fe0128e4f6210d777246bfa0ca558. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HUB281900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a790e5decfb543227f05495bff2b94879b348f8ed15502492e216b0b980a73e. 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/HUB281900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e6c1d40cbedff54d1b4bcc8a08c6d85df21d4965635b425e8743ae61e339c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/HUB281900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db309bb3cd6ca21df006a87dce6a46d602e11d9023df295ab9627e319d31f4f. 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/HUB281900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcfc33a6fb84e42e92a15ae357019ee49e33cd618a236e1e4e55b692251247e. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/HUB281900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4a50c748fdaa5f71f66581df12e6d19bb191083176551766e6e79bd304c416. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HUB281900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b99e0f8eab93789ebb53f387b34b3868307234645dbc9c25d05fd3bd0a86d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/HUB281900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8311d0493a060fefa1dce054eb4a3a065b7db36feea79f0a02ba2e2020ac857a. 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/HUB281900079.
Ave Maria in B-Flat Major, Op. 52 No. 6, D. 839
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54677bc9f6d69d72068a102fde3d6409b7d9f37b1dceb376e77ae0ec857b021. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HUB281900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecee5c598dc449caea3e26ee094c3448d525aab80e5c910ab0bb15093bbf77dc. 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/HUB281900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6f548cf4fdb9b9715a6f90fc13eefccd2f158246817bd57a318c58174dcd34. 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/HUB281900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b51f0a0bafa9c7ae0328be3baff666b0f1742a6d8e81368dd204d4cf704ec07. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HUB281900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda02abec43d674f84325f6b33c5b80681dd4b00e7dd060c9f9bf936b9da29cb. 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/HUB281900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f7ad630f7e8f8d7e7920c0fd8ed5fa3be83cc371693b5d4466085b74cac15. 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/HUB281900085.
Dialogues des Carmélites, FP 159: Ave Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59f76faf706329cdc61e09e7c51e16708c9049f73444fae22be15d9b503940. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUB281900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0e465c6d53521aa1815d0369a1ce8bc8171d8fbd065d049ac70a800cfb8be. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/HUB281900087.
Freuen sollen sich die Himmel, ISS 36: No. 4, Ave Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae1870a29ee74c15cf4d7cd9ccf785e3e3284b8e9efdf16414b09f74dff0d85. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/HUB281900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a9811f58706fe4c271cd47f43b18063f0b148bcb14db23fa40ab0a31881a4f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUB281900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b56b6ab7d983c1d1b58d53ae03fdb0246fc9d8dc31eb0f422af6a146d1467c. 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/HUB281900237.
Kocsar: Repliche Nos. 1-3 / Music of the Seasons / Songs On Poems by Lajos Kassak
Kocsar: Concerto in Memoriam Z.H. / Episodi / Ot Tetel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd2ac2e4f6efe07762d16fe1e56953c17d52dda8750e741f395f69deb8a42ef. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/HUA253171026.
Göteborgs Domkyrkas Goss- och Flickkörer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce646809fd313719650bc48e7fb76ace5d642e16ae06d0d49cd0dbc300fba4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBLPF6764418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46359f084f27d46b16c09140de2d7473ac5bd19841edc9f5f1723eb9f8ab5f9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBLPF6764420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a1c357c6f6e58f5ed08ddd15c4745173c334fc134707af20c99825e3298a3. 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/GBLPF6764421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf93cc9e0ae0572f9a175ba458dc572892f26fc10b0097e111227b8dd336fab. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBLPF6764426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1853adef3054b1cfd4d4097a3a19298546e0abb7f2d6bafa056f1f38e8edcf6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLPF6764433.
Kocsar: Echos Nos. 1-4 / Hollos: Ciklus / Buyanovski: 4 Improviations for Horn Solo
4 Improvisations for horn solo: No. 1. Scandinavia: Andante maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93272195984154c70c96f0449052348f97214d4752644d150a927f2c6fb5e206. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/HUA253217610.
4 Improvisations for horn solo: No. 3. Hispany: Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8873c31d2269b8d451abe64483302210993376a58810c2fb7456360679b0d43. 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/HUA253217612.
4 Improvisations for horn solo: No. 4. Japan: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb0cf034334e490ae1adb7fc39538d31f0c3275560ff3b9a22051157a6ac80. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HUA253217613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5779d3557ac5c2ab9109c402d20713436ede96ca1fd232bbca379f1c75b7225. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM4TX2204543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e37a04bc8c0aa8a69e7b761f0fe1d6db1e7104efb05f53c9b2c47336d7612d. 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/QM4TX2204544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86138fd080af17b671cfd034e1ae5f8848c5a3edfbe9ade98e181a99b167c2b6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM4TX2204546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ca6ce43fd3f2e0f942451913d5835bc596fbb148c974c38d55b3442198272a. 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/USL4R2102664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f75325457bbd565ad5ec99ebbe4e4336c5fc5f33004e0b65d463f9da17acc8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QM4TW2247618.
Hungarian Contemporary Works for Flute Duet
Choral Works From The End Of The Millennium
2011 Texas Music Educators Association (TMEA): Garland High School A cappella Women
Farkas / Eben / Orban / Sugar / Nogradi / Karai: Choral Music
Kocsar, M.: Repliche No. 2 / Sugar, M.: Cimcor / Madarasz, I.: 5 Cases (Contemporary Hungarian Works for Horn and Cimbalom)
Jereb: Monography / Szekely: Rhapsody / Farkas, F.: Bucinata / Kocsar: Rhapsody / Victor: Viatrone
Horusitzky / Sugar, R. / Kosa / Balassa / Kocsar: Hungarian Contemporary Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da5241351ad15cb54005dcf64a139f69149029c6e6117b0f1e5da11d794732b. 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/USR9N0215502.