Rudi Stephan (29 July 1887 – 29 September 1915) was a German composer of great promise who was considered one of the leading talents of his generation. He was killed in action during World War I. Li
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 0x8c39b00c7cc41375bab9abeb11bf7d997f28fe69a7c20a5ca2e16b6f25fb3ced. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b76696d5-45e9-4793-910e-c2100fff91d1.json and https://artists.proofprofile.net/proofs/artist/b76696d5-45e9-4793-910e-c2100fff91d1.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Butterworth: A Shropshire Lad: V. The Lads in Their Hundreds
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 0x3101becbaf7f01f792c073309adf0a097daddd59717b22886fa3e7ba8b28936b. 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/GBAYC1800544 — a six-check JSON result.
Weill: Four Walt Whitman Songs: I. "Beat! Beat! Drums!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf622c56152f1321a8be91a6970d53787c582fb433e9c859b4965e76ea480bcc9. 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/GBAYC1800546 — a six-check JSON result.
Weill: Four Walt Whitman Songs: II. "Oh captain! My captain!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355745e4643de27f254acdbac929575b5d0fcf75787ec35addd79fcb9ffd743d. 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/GBAYC1800547 — a six-check JSON result.
Weill: Four Walt Whitman Songs: III. "Come up from the fields, father"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a939af7a0004c2c847234b13f0adb491520c4a15be7309c33e7aa05abdc0b7b. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1800548 — a six-check JSON result.
Weill: Four Walt Whitman Songs: IV. Dirge for Two Veterans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c3f3d016482dfc5cf1822e66a21c3e8e44818357b696dd1b840bf92e5e3ed7. 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/GBAYC1800549 — a six-check JSON result.
À nos morts ignorés (Les musiciens et la Grande Guerre, Vol. 15)
Mélodies: Prescience, conscience (Les musiciens et la Grande Guerre, Vol. 4)
3 Ballades de François Villon, CD 126 (Version for Voice & Orchestra): No. 1, Ballade de Villon à s'amye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4335b3046aca37040b92f8ca9685d761567da5c9829d8f27d5624b2685a1ba85. 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/DEF057902881 — a six-check JSON result.
Sergiu Celibidache: The Berlin Recordings (1945 - 1957)
Schmidt: Symphony No. 4 - Stephan: Music for Orchestra
Symphony No. 4 in C Major: I. Allegro molto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0b905157be9e14436cfe75d2c9b1af099254c08407d694f57a2a9871cbc0eb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DESR72035118 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e62c435c15b0098cf0d3cb3fa21922beac4c1986c39f652bb8748e8c2fdeaf1. 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/DESR72035119 — a six-check JSON result.
Symphony No. 4 in C Major: III. Molto vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe752a48a4b3c208ae176450f5bf16bc4659d30e907005837ed90d275aa24f10e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DESR72035120 — a six-check JSON result.
Symphony No. 4 in C Major: IV. Tempo primo (Allegro molto moderato) un poco sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486e1dd10185bb285aa2a3f8a4af60341de80a5212f74d5ed943555c8a872d5e. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DESR72035121 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc3342f362a073137e50485e1a2174b12857149c55b22923cb0d5e7b621dc05. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DESR72035122 — a six-check JSON result.
Die ersten Menschen, Act I, Scene 1: "Was schaffst du, Chawa?" (Adahm, Chawa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4087492897dbbd07e7a01637fceb1a2e5184050f0c829bab35db7beaec9a00. 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/FR05G0460077 — a six-check JSON result.
Pour en finir avec la guerre (Les musiciens et la Grande Guerre, Vol. 29)
Weill, Wellesz & Stephan: Works for Violin & Orchestra
Stephan: Music for Violin and Orchestra & Music for Orchestra
No Exceptions No Exemptions: Great War Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd6f77dc321b024d40e59a74846fa9c3929e070f0f0559fb46eec5dc8df870f. 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/GBLLH1440124 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46ff4a64ebadf619d26461607e8a74e5443becb3f96bee9c86495e0357dcf73. 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/GBLLH1440125 — a six-check JSON result.
The Journey Home – Live from the Kennedy Center
Alexander Schaichet and the First Swiss Chamber Orchestra
Romantische Weihnachts-Lieder, -Szenen und -Gesänge
Wolf, Schreker, Stephan, Berg, Strauss & Karg-Elert: Natur und Nacht
Saab: Symphony No. 1 - Delius: Sea Drift - Stephan: Music for Orchestra (1942-1997)
Stephan, Vierne & Durosoir: Ombres et lumières (Les musiciens et la Grande Guerre, Vol. 18)