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 0x68fd46b7fe3ec3e2b160427dcf1affecf7ef2f5c3feb89223bd3bd198bfc293e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f35e129a-1e62-47a9-a68a-e96abc26fd8b.json and https://artists.proofprofile.net/proofs/artist/f35e129a-1e62-47a9-a68a-e96abc26fd8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stabat Mater, Op. 58, B. 71: VIII. Fac ut portem Christi mortem
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 0xa5f33e34d6e11df81814b85a117bad72996d162bb49c906f4447e354b4b57041. 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/GBHZU1206208.
Stabat Mater, Op. 58, B. 71: IX. Inflammatus et accensus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90be75c1750b58cf2ff124ad61ba34bb11007ed04863bf174b898268a792237. 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/GBHZU1206209.
Stabat Mater, Op. 58, B. 71: X. Quando corpus morietur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe079a1940ce944fd5db60eac211f093ea4982aff64776304ec8b2b72c959a078. 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/GBHZU1206210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34765ff041d25fe07566aee39bba81dc6db8ddcfe8be740718679c3d6f44132. 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/GBHZU1206211.
Stabat Mater, Op. 58, B. 71: I. Stabat mater dolorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239beb9d74044037c2389b8f1b8c5e2bdf78304231d5d0b3e5790a1f4b9a5ea2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GBHZU1206201.
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
Stabat Mater, Op. 58, B. 71: II. Quis est homo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2ad7daec46ccf978164d49afc33fd56f87d41f185439120ff8bc291b2a605d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBHZU1206202.
Stabat Mater, Op. 58, B. 71: III. Eia, mater, fons amoris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1f687035932dba48001850565d240a09b430bae6c75ca762e0d43d1461b901. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBHZU1206203.
Stabat Mater, Op. 58, B. 71: IV. Fac ut ardeat cor meum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b05b5a09a3f82f0f966ca89f05292e273be7452a23e3932912e6067f680e1c. 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/GBHZU1206204.
Stabat Mater, Op. 58, B. 71: V. Tui nati vulnerati
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70cc8e22bf2568988a1e0ac4b384c92c04eea6127bdfa6088371898ae43b87e. 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/GBHZU1206205.
Stabat Mater, Op. 58, B. 71: VI. Fac me vere tecum flere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac8c20ec0e8e644a6be1d9a7340076b5b4b296ea1914b2773d2b558514ffe1. 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/GBHZU1206206.
Stabat Mater, Op. 58, B. 71: VII. Virgo, virginum praeclara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d9c4af9a74ee2529114f7c1e6cf49485e44dd621b1b2762a738aa833ea103f. 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/GBHZU1206207.
Mahler: Symphony No. 8 in E-Flat Major – "Symphony of a Thousand"
Liszt: Legende Von Der Heiligen Elisabeth (Die)
Symphony No. 1 in D Minor, "The Gothic": Part 1: I Allegro assai: section 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f5e666c8aa07b136b92677f7e323d0f441f7ee9e6260ec741e2844d46eefe2. 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/HKI190407902.
Symphony No. 1 in D Minor, "The Gothic": Part 1: I Allegro assai: section 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13311d630bfe6ac44b799ddafa923726acdb7802521443c53c5f9532fa21a19. 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/HKI190407904.
Symphony No. 1 in D Minor, "The Gothic": Part 1: II. Lento espressivo e solenne: section 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e4f61f9dbbcbb62c35372cbffd00f61f083294bcb8ec728fff517ce5ab2c1. 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/HKI190407905.
Symphony No. 1 in D Minor, "The Gothic": Part 1: II. Lento espressivo e solenne: section 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf5c11947648cb402c473415754d31a65726a0d24485dd57f5d0ec6f70718ce. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI190407906.
Symphony No. 1 in D Minor, "The Gothic": Part 1: II. Lento espressivo e solenne: section 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e66959c5a225e241a6630e61b4d35237e03997ead14f2c36fdf563da79d957. 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/HKI190407907.
Symphony No. 1 in D Minor, "The Gothic": Part 1: I Allegro assai: section 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b88ad2abfb7df2ceb69dbc12a023dc1adc559b2f839b965fb478ff20cbafea5. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/HKI190407901.
Symphony No. 1 in D Minor, "The Gothic": Part 1: I Allegro assai: section 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03e62a12e2b9affcbda92aa164c7cff86d766f1abdb9c3a3b630795e7986ac9. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/HKI190407903.
Michael Gielen Edition, Vol. 6: Mahler Symphonies & Orchestral Song Cycles (Recorded 1988-2014)
Symphony No. 1 in D Major "Titan": I. Langsam. Schleppend - Im Anfang sehr gemächlich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238a0ec7dccba0c8c58f443be7cd553f480b1ef5eaf11b8a254a8cb1796e29ba. 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/DEA550205851.
Symphony No. 2 in C Minor "Resurrection": II. Andante moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb333360b52999759077c151118071a44ece4ac2fd51766dfe9319130d2afa65d. 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/DEA559606681.
Symphony No. 6 in A Minor "Tragic": I. Allegro energico, ma non troppo. Heftig aber markig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e1d4fef7647196216d68870e99d71dcd00f94784a0b378d532a2ec1701b08c. 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/DEA559906671.
Symphony No. 1 in D Major "Titan": III. Feierlich und gemessen, ohne zu schleppen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16d6bbaef534154db9c13bfa12df5158485c97f674361228a145cac44e5cb98. 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/DEA550205853.
Symphony No. 2 in C Minor "Resurrection": V. Finale. Im tempo des scherzos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa456c182c2a3ede6fda09c61ef85fb343a9bd97cb1df1b29b25d0d89de4af446. 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/DEA559606684.
Symphony No. 2 in C Minor "Resurrection": I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fd22726ae8455ac93d4069c261d083d21e38e6d1db1c4f2d28765b6896f152. 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/DEA559606680.
Symphony No. 3 in D Minor: VI. Langsam. Ruhevoll. Empfunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960880d3897123ffd89fe0075aa56abee53c9057e2a810a796a94bc593f64b51. 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/DEA559704549.
Janáček: The Diary of One Who Disappeared
Der Freischütz, J. 277 / Act 3: "Was gleicht wohl auf Erden dem Jägervergnügen?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c736f769702e7daa5a2ac83677e33f80795059af26187da88f0d095b8f482a4. 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/NLA508802701.
Lohengrin, WWV 75 / Act 3: "Treulich geführt ziehet dahin"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9713cfe9aea426a3ce572a4f9409549df03710308debcbd5e725e431a2e32295. 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/NLA508802710.
Hvězdy se líbají. Česká opereta za války a po válce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6364560b287a6d6afb89bbb0104c98cde8455f6698acc343fbb8684058888bd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CZA161800672.
Hradišťan & Jiří Pavlica & Spirituál kvintet & Dagmar Pecková (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912eaa339203f2ddfe8c5521e4e23297aceae31f2738430fcf0fd716d5d3708a. 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/CZA752053803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1de2d6e582b10725098f89b9472670f9712403345a369f7180a36d9e17165. 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/CZA752053808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f7f609edceb658252b0f5a6ecfcfe826af91fa615ef5e591731b6cd2bf9d2b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA752053809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab10e45d8242e5a65eb0ff6180332de5a723caf6188432586ac3e3864f67a39. 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/CZA752053832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5824483067442f58414ce2e5c8fc0b31b7bee4873dced0364cfa1cf48bdc048f. 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/CZA752053813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929a7af1c43c38f4a526ed4d992dd3ed213acb1d6ffe3af6424f0b4f6c54ddc5. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/CZA752053815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e38f7a6b6c937817ce77ec054a7a13c6f66f00e215b24d4d3f5332b31d8c50. 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/CZA752053821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6559f463a0dd450c270bff167b80b7aae1fa0da4a9bc22f5e2abc5970eda3777. 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/CZA161700261.
Martinů: Nipponari, Magic Nights, Czech Rhapsody
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c42c9d7d36cc573ab5d8ae91e07ef3137f2adb2273a16459e20309c85a6d0b. 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/CZA168671995.
Mozart, Mascagni, Leoncavallo, Tchaikovsky & Bizet: Arias
Le nozze di Figaro, K. 492: Voi, che sapete (Cherubio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcac19fb1070f8824def9327c78fea08006ab2035ba7758be0e5b5458c6e105a. 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/CZA160202050.
Wagner, Schönberg, Zemlinsky, Brahms: Dagmar Pecková Song Recital
Debussy: Le martyre de Saint Sébastien, L. 124
Musikstadt Dresden: Große Komponisten Vol.2
Mahler: Symphony No. 8 in E-Flat Major / Schoenberg: Jakobsleiter (Die)