Siegmund Nimsgern (14 January 1940 – 14 September 2025) was a German bass-baritone who made an international career. His signature roles were "evil, dark, ambiguous figures" such as Pizarro in Beethov
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 0x2cb666c973096e3ba877cd1fc723a722a359072368d8696b28480053682377aa. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ed6f1c1-8253-4f21-90dc-e9dd8f3bc81d.json and https://artists.proofprofile.net/proofs/artist/0ed6f1c1-8253-4f21-90dc-e9dd8f3bc81d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mosè in Egitto / Act 1: No. 1 Introduzione: "Ah! Chi ne aiuta! Oh ciel!"
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 0xa10ad1ab5ff108999540e15c661d494db32d1289ffa06fd395baa0dc797297ea. 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/NLA508009201 — a six-check JSON result.
Lohengrin, Act II Scene 4/5: Zurück, Elsa! Nicht länger will ich dulden – Heil! Heil dem König!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4718ffd2bbe20ce2d14f2e6c38575962f510020b08070a36093638093661ec. 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/GBF078542223 — a six-check JSON result.
Lohengrin, Act I Scene 1: Dank, König, dir, daß du zu richten kamst!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b104b6557a8d38b38d70f5d2b2def9218a9b56abcaaa3c95a409c772e60f347. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542203 — a six-check JSON result.
Lohengrin, Act I Scene 2: Mich irret nicht ihr träumerischer Mut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed09fdcf8535e9cad3a72fbd74f034ebb5db8d5a5e6b941f95f2c1361e2ba4. 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/GBF078542206 — a six-check JSON result.
Lohengrin, Act I Scene 2: Wer hier im Gotteskampf zu streiten kam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10cd98f63659bfff9580e43896d2deb0482bc3ea1391bf4d4e03c4bafc6ed45. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542207 — a six-check JSON result.
Lohengrin, Act I Scene 3: Nun höret mich und achtet wohl – Mein Herr und Gott, nun ruf ich dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64d21e2ec2f8d9d6da6f50534b26459ab3775f476a061300578731193de7ce6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542211 — a six-check JSON result.
Lohengrin, Act I Scene 3: Durch Gottes Sieg ist jetzt dein Leben mein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f831607b8c9ef60b7ba51191eb060fe15c4c091b8d1ae886d474ffeebf73f5f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542212 — a six-check JSON result.
Lohengrin, Act I Scene 3: Nun hört! Euch, Volk und Edlen mach' ich kund
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3648596a247fe82ad5ed1995f1947b069d6094341b097c9997392ebf3385050f. 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/GBF078542210 — a six-check JSON result.
Lohengrin, Act II Scene 1: Erhebe dich, Genossin meiner Schmach! – Was macht dich in so wilder Klage doch vergehn?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c207847e28a23d6d61eed2f86a95c63fc8e091835326504b075917a64e9d2d5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542214 — a six-check JSON result.
Lohengrin, Act II Scene 2: Wie kann ich solche Huld dir lohnen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8eeef2c84929dbbf7eb0adf260a2f1edc013202e730cacc463c6577d1580db. 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/GBF078542219 — a six-check JSON result.
Lohengrin, Act II Scene 3: Des Königs Wort und Will' tu ich euch kund – Nun hört, dem Lande will er uns entführen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e98d3078c8de9554d3f180188637f6cfeaaca344797efc029396d9d4f6abae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542221 — a six-check JSON result.
Lohengrin, Act II Scene 5: Mein Held, entgegne kühn dem Ungetreuen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eca51aef8590a1cba63eccfc0c1a314547ee7402e60007c21e396d2311ec290. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542226 — a six-check JSON result.
Mosè in Egitto / Act 1: No. 4 Quintetto: "Celeste man placata!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002f2c0ef79bfea47b79534d874d73d82f9bed711498b53225c07a60932e64a6. 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/NLA508009204 — a six-check JSON result.
Lohengrin, Act II Scene 1: Du wilde Seherin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee68b95eebe57d906778d8cf0c73da21573f6a1dca1379536a1324cd45d75f0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078542215 — a six-check JSON result.
Lohengrin, Act II Scene 2: Euch Lüften, die mein Klagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409a171cbded85fea692baab7575524b4715462e5c11d4978a33b32b62a567e. 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/GBF078542216 — a six-check JSON result.
Lohengrin, Act II Scene 5: O König! Trugbetörte Fürsten! Haltet ein!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49801a0d1d70327906bb18a631941102d65c9ca5113cb13b5fba3826e5f4e6d. 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/GBF078542224 — a six-check JSON result.
Lohengrin, Act II Scene 5: Welch ein Geheimnis muß der Held bewahren?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80e8efa5d16153f457e0571451827f19757f77957b146acd3dd11cfd50726f2. 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/GBF078542225 — a six-check JSON result.