Hanno Müller-Brachmann (born 1970) is a German bass-baritone who made an international career in both opera and concert. A member of the Berlin State Opera from 1998 to 2011, he first sang Mozart role
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 0xc919baad1519a14219845dc3cdc17f8b6da9238f5b50f32c2f37e0b2bd71f782. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b04b523-d71a-45e2-babf-0a26209a72db.json and https://artists.proofprofile.net/proofs/artist/5b04b523-d71a-45e2-babf-0a26209a72db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mahler & Brahms & Martin: "Auf jenen Höh'n"
Johann Sebastian Bach: Markus-Passion BWV 247
Markus-Passion BWV 247: Choral: Sie stellen uns wie Ketzern nach
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 0x0f6267c845f98c58a518f212303610afaab85fe5cef623b38b5e0286f9abff46. 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/DEN421502003.
Markus-Passion BWV 247: Choral: Mir hat die Welt trüglich gericht'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac64db5306dabf95af8f2cca9fd47ea0ce54d2f59f7c84935037f3de76e7cf33. 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/DEN421502005.
Markus-Passion BWV 247: Choral: Ich, ich und meine Sünden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6f773b106503d7fee027854e27e25490bebaba75f7a84a86870af10f67b6e1. 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/DEN421502007.
Markus-Passion BWV 247: Rezitativ: Er antwortete und sprach zu ihnen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496618ff05b7ea34d201ec3a0418b12e6beb87cb88762c552498f13d9e45da6c. 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/DEN421502008.
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
Bach, J.S.: Bass Cantatas, Bwv 56, 82, 158
Schubert: Lied Edition 11 - North German Poets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc693c6999315d9ff4528aa8ac6754ba113c5569fa523c25da2aca2a2e52846c. 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/HKI190230001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc13bc12fcf23d3c40d72e0ef71fcfe498adf023fc21377f462c5e75130d7c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI190230008.
Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede2e03b838338560331f6809bbc876edd92e105ab3eeda7b8c2c4b5186429ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBA0801794.
Die Zauberflöte, K. 620, Act I: No. 2, Der Vogelfänger bin ich ja - Dialogue. He da!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b71d4a8f9fa177b04c32456929de2e15ecd25d950bc194fc1fb73cbe11cdb1f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN960532503.
Die Zauberflöte, K. 620, Act I: No. 5, Hm! hm! hm! hm!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f431e0e1513f1266d04aad8bd57f5872bccbacb9b9c9d3736e453e05c32f854. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN960532508.
Die Zauberflöte, K. 620, Act I: No. 7, Duet. Bei Männern, welche Liebe fühlen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2f0bb55fef0c156432c0cd8882dbf381e1321e5f203f307e790e11de79746e. 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/DEN960532512.
Die Zauberflöte, K. 620, Act I: No. 6, Du feines Täubchen, nur herein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd7f129aab7dc1ba8fbdf7163067c387e94c82d3321ac8a9fcd042852b96c00. 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/DEN960532510.
Die Zauberflöte, K. 620, Act I: No. 8, Finale: e-f. Schnelle Füße, rascher Mut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecee34f5d117ba6a9f3e018b1a7bc84bdb4e7649a66f7ba92cdbc08e7c60888. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN960532515.
Die Zauberflöte, K. 620, Act II: No. 21, Finale: f-g. Papagena! Weibchen! Täubchen! - Pa-Pa-Pa-Pa-Pa-Pa-Papagena!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584493ebfeedc532b484675f312213030cefb66e6d5f3a3988ff9a834c172160. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN960532541.
Die Zauberflöte, K. 620, Act II: No. 12, Wie? Wie? Wie?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb9cf048afe770ce5ef17704b4f9b1332d06c2fee42294abd8089f59c33648f. 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/DEN960532522.
Die Zauberflöte, K. 620, Act II: No. 20, Ein Mädchen oder Weibchen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa342eff4fd49b1445a05aa83d8fcf4b7f2a825b5a97162e6f28e7011f6af29e8. 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/DEN960532537.
Die Zauberflöte, K. 620, Act I: Dialogue. Bin ich nicht ein Narr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8734b13d3be1dce2b0022bf157d6838d39f5686bfc5c82c22fc0c2d517f4324. 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/DEN960532511.
Die Zauberflöte, K. 620, Act II: Dialogue. Eine schreckliche Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91340b7457384709326068084d480fb83da2510c3ddd62d42e044537b608057d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN960532520.
Die Zauberflöte, K. 620, Act II: Dialogue. Heil dir, Jüngling - Ha, da find' ich ja die Spröde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ed259b447310d279e71a40bf8af35d52c73acc41567c70da419aae23e1828a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN960532523.
Die Zauberflöte, K. 620, Act II: Dialogue. Nicht wahr, Tamino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57893efa3801e45f0ebe3d0725267d2d19c8b2625593cb6a84aede6e83f9e11f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEN960532532.
Die Zauberflöte, K. 620, Act II: Dialogue. Tamino, wollen wir nicht speisen?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e20d90d7f5787eb08e898847da1610ca652451fabb3f0afb33319939436bc60. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:46:00Z), 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/DEN960532530.
Die Zauberflöte, K. 620, Act II: Dialogue. Hier seid ihr euch beide allein überlassen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb86ca60ec457bbb7d5afe2376e6aa76444d8ede61822d6952393e4d09f3ef54. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEN960532528.
Die Zauberflöte, K. 620, Act II: Dialogue. Tamino! Tamino!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87883717cbb70e93f6d5effc6b7f04ec66eaa24a3b727398971503e49864aede. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEN960532536.
Die Zauberflöte, K. 620, Act II: Dialogue. Da bin ich schon, mein Engel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43aa7dc97e47665cde7a908cecabfba56c2a18cee8c7c4ce8cae223b538ed68. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEN960532538.