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 0x134de5b585f6ed2026c7314a67d73f6dd6b5f41abe4249386d01dc93204c8ee9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/975c373b-52a7-489f-b787-a7f29b31f60a.json and https://artists.proofprofile.net/proofs/artist/975c373b-52a7-489f-b787-a7f29b31f60a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Adam Vaclav Michna: Messe de Saint-Wenceslas & Requiem
Messe de Saint-Wenceslas: Kyrie, Christe, Kyrie
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 0x173703bbc7ff1f408873ade2629a4aabd2d14b70b2ee2b2b9141d97c96c7af91. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY220203239 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92db6c6db78482da65cf7607893f7e985beeb3f11b3b1d271081885d086ab87. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY220203244 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f7a095d1ac1cb98eb29a53d8a3e6c87d643a8ee9425793dc120e344e72ed85. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRY220203245 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ac0644299b1bca782628b87b8fd682872b987a24371a1e1c072ed1a352f7bc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA301500001 — a six-check JSON result.
The Czech Lute: No. 2, Povolani Duchovne Nevesty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c484575976ce43e8e05e69811477f458748f6f1698fb6ac77dc10f912601ff6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA301500002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590719c354455ca522d5bcd9bb2e69357b39777c44ff23fe7a77908ccc64b925. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA301500006 — a six-check JSON result.
The Czech Lute: No. 9, Andelske Pratelstvi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f9af11bb4c1d3bc96ad21a0bd2fd25dc6bb831234d4de7dbd756f0c0a8ca1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA301500009 — a six-check JSON result.
Czech Philharmonic Low Brass (Arr. for Brass Band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5520f3d760ce7792e4cc124574141bfbc9471ab4c5069ea9bc5eb4e07e2a68cf. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZD811442124 — a six-check JSON result.
Michna: Czech Marian Music - Lilly Among Thorns
Czech Marian Music: Přešťastný den narození blahoslavené Panny
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a539f92d635dc10691399ac2aa0939a2acf169da104b7203a33748e36b9d513. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA162200790 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a48fa9ea7d71f0e665e63283e90df1edbc75cc242c24083db0f1200d9d5a69. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA162200791 — a six-check JSON result.
Czech Marian Music: Z celého srdce miluji, tebe, Maria, miluji
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba63c71d95cabacbf412388a20a3f5cc3156eefbb580c703380e6d3534364d90. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA162200792 — a six-check JSON result.
Poslyšte a podivte se, jaké jest to veselí!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e395ddae25be106c56c78b08ae030863f261e45bcbffddac521b585264a5029. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA162200794 — a six-check JSON result.
Jak jest Maria seznala, že jest Alžběta počala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc014266d12be30fc4fa91248e6ec36cd9da12b7e9bba46e531837450e2317. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA162200796 — a six-check JSON result.
A. V. Michna z Otradovic: Vánoční hudba - výběr z kancionálů
Vánoční hospoda (Z kancionálu Česká mariánská muzika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3469f65a48f1eb9e012d79849312982967ce9d22224fa0d88bef5e5436f47918. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZD941865456 — a six-check JSON result.
Vánoční roztomilost (Z kancionálu Česká mariánská muzika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e730c7dc463c268baca85b51b223d5ee7a494649c15e720f7b519ad9c058a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZD941865459 — a six-check JSON result.
Czech Baroque Christmas Music (Mono Version)
Musique sacrée instrumentale en Bohême et Moravie (Stereo Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe720fa74363f56468b4e69756702e4fd225513b338aec4dbfbd7e045115d9f6f. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZAC72300111 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6de2a4ce0dc640f8f01207d603ec33f4b84e635a7c67cbb00c01b79d21b9606. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZAC72300112 — a six-check JSON result.
Loutna česká: II, Povolání Duchovné Nevěsty. Dialogus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe250aa895512e6bf522186879cb4d11e058dd95e7b92f781b91a7e62517ecccf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZAC72300113 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0759e1efa579e0a51c7f4717b8c25ed892e7ab664de04357293196e8d3732ba. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZAC72300120 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb59d27cf45d8f501804c5a3dcf14be7cf6c090f9e413506eac1600963ea6abc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169300335 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15b32dac5e3b30a09e3e3d3bf45f95df565cf6a70f8fcc3492bf58e6f5750b4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169101484 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03184633a554a4b8b385519b4bd8d8f8207d6c4a54a268c92471280dea0d2087. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169109484 — a six-check JSON result.
The Czech Music for the Virgin Mary: No. 4, Christmas Eve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c5eb99f3bca18dd59112a0a556016bc861b202065a72ecf231888a7c6527e8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169104485 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc183eec3394767e48160ed3f123ba14f37461e2ee9d1b07f604ba8e3128c837d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZM072012002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22381407c078297c06f559a81f281fc8e5af6148a1ff64843d789bb8838be178. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZM072012001 — a six-check JSON result.
Ave Maria, Op. 52, No. 6, D.839 (Arr. for Trumpet Duo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3075cf69e6bea81998d2b88953628d0a06adc76878fdc115f4c41bb672021a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZL209900103 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6364560b287a6d6afb89bbb0104c98cde8455f6698acc343fbb8684058888bd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161800672 — a six-check JSON result.
Path of Light / Cesta světla / České a moravské koledy a zpěvy vánoční
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a7b330e7065601b79cbdbf27c68acfd714bb0d1e7fbbe31e7304f54b0b16f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200771 — a six-check JSON result.
We Bring You Glad Tidings - I'd Like to Go to Bethlehem - The Lord Jesus Is Born
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83427dc803d2bc1ba96ac7c8d4af317196ef73d597bb885bd7c545bf33c32a5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200772 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddfed21aa40a489dd8117a538e538b217043b023f6fe742ca9e8fb806c39724. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200775 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a83ff98205d3b9ebe47d8bc7276a81a24e8468ad8eec175afe0b12ea9eba9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200779 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3841351fbf73227ea88cd1185ab7cb42749935e7d0eac699949b0edf5caf6a3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200780 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e27ca65211f196a83b12618591669c955b2ef910c6eb53c03c03b257616a8d0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200783 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c02c3c7b82434d0e176fc35fbc03565ca47259f72d99efa4780f6b4118d1a8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168200784 — a six-check JSON result.
Joint Concerto: Corelli, Händel, Krček, Plánický, Michna (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a85affdb5096d18561e1b0429c3a90776fad836e925b0db56e3f978b81441. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA160504830 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275c4c6ec487e36198444f33297390593282393375c67b9945feb23355f0793b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169300310 — a six-check JSON result.
Amore, Venere, Tersicore: Music of XVIth and XVIIth Centuries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f1130091bfbba612ce1fd94969282ce4d83634016063fa8001e25c723cb05. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA630000073 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86235076c8f41ddd61e621f5d75db0b5189e6ee081f762d6ae9e25d1a7cc0da2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA630000077 — a six-check JSON result.
Vejvanovský, Praetorius, Pecelius, Michna: Christmas Brass Music
Vejvanovský, Michna, Otto, Pecelius, Schiassi: Christmas Brass Music