thumb| Paul Ludvig Irgens-Jensen (13 April 1894 – 11 April 1969) was a Norwegian twentieth-century composer. Biography Irgens-Jensen studied piano with Nils Larsen while a philology student at the Un
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 0x454e7a02f474696acdad2dfc8972636629e821c2f05e14f8998a9962c57323fe. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de268f3f-af9c-4de7-895c-5f9df02b3bae.json and https://artists.proofprofile.net/proofs/artist/de268f3f-af9c-4de7-895c-5f9df02b3bae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jeg vet meg en søvn i Jesu navn (arr. M. H. Draagen for voice and organ)
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 0x40f58c5782ed4a2edbb65ff604c6c593cf9c1083dc5d8f2b448fe5f8a018827f. 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/NOEHX1001170.
Vocal Recital: Gustavson, Eva - Grieg, E. / Gluck, C.W. / Mahler, G. / Meyerbeer, G. / Saint-Saens, C. / Massenet, J. / Lalo, E. / Bizet, G.
Kathleen Ferrier Centenary Edition - The Complete Decca Recordings
Norwegian Rhapsody - Orchestral Favourites
Bojarernes Indtogsmarsch (Entry March of the Boyars): Bojarenes Indtogsmarsj [Entry of the Boyars]
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2 Elegiac Melodies, Op. 34: No. 2, Last Spring
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100 Folk-tunes from Hardanger, Op. 151, Suite No. 1: I. Velkomne med aera (Welcome with Honour)
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Kjempeviseslatten (the Ballade of Revolt), Op. 22a, No. 5
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Ut mot havet (Out to Sea): Ut mot havet [Towards the Sea]
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd161ba719e9e2c2b6abfe96963ac81983e0e77877497e87e0bb49aa90402f93. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SEAEN0267110.
Peer Gynt Suite No. 1, Op. 46: I. Morgenstemning (Morning Mood)
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Symphoni No. 4 - Bookmarks from Japan: I, II, IV, V, VI - Live
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Peer Gynt, Op. 28: Suite No. 1: The Devil's Five-Hop
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Peer Gynt, Op. 28: Suite No. 1: Hymn against the Boyg
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Peer Gynt, Op. 28: Suite No. 1: Mixed Company
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100 Folk-tunes from Hardanger, Op. 151: Suite No. 1: Welcome with Honour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa071aaa52aefca4ad0c2fe755a9f3650fbcabb2c5169717db0927feade39bf50. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236104.
100 Folk-tunes from Hardanger, Op. 151: Suite No. 1: Langeleik Tune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d253a53167645f2195617227776e9892f7aca2c5d588573d1ff4c4000d3d4. 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/HKI190236105.
100 Folk-tunes from Hardanger, Op. 151: Suite No. 1: Hardanger Ale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f180f834fcbfb3041b272a09a89b5fe0afdeb6b5fc6d6f508bd552fb5a3465. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061c2202f1910adab7da2cd28a2152f80a07700fa25c82ab3013379ea95b9ac8. 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/HKI190236107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fbd1a2cf9b557e185dd5d96a1a82efebaa895c88c5457e28e11723b94753bb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKI190236108.
Ut mot havet (Out to Sea): Out Towards the Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cdba130bac6c46665c4e6bf2707fbcbf772c6748bdc0df8c2a973a5e5dd2b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKI190236109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0234ea5344d9c4892b7aa485f61a5719a15d918ebf82c74b7c0933df2d83bb0f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/HKI190236110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4acea1104b77937be5838913f4e532106c9047dd619446bb4c2ccab2465441. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f66e90fb9b70779a65662adad59738991d05997b4d0dddc9cc677a0feec5eb. 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/HKI190236112.
Kjempeviseslatten (The Ballade of Revolt), Op. 22a, No. 5: The Ballad of Revolt, Op. 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca155c8bc4ed0a339e1ca79b5ae5bace3127c4e603af3ba38e30464b5744659. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236113.
Norske eventyrbilleder (Scenes from Norwegian Fairy Tales), Op. 37: II - The Princess Riding on the Bear
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Norske eventyrbilleder (Scenes from Norwegian Fairy Tales), Op. 37: III - Entry of the Trolls into the Blue Mountain
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Norske eventyrbilleder (Scenes from Norwegian Fairy Tales), Op. 37: IV - Dance of the Little Trolls
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cda5d31fb00bcbd93f3358c98e3d7369f2225169bcf6bc98e9053e4309b076. 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/NOEHX1612020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da4d3f29f5e78610dc78f7f967d7a08127f98d4b223403995df5f9ac056a58. 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/NOEHX1612030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef75c19b816fb583f6785aad469d17de5eb18d0729e095b262436332eb7b743. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1612040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e8d7ca676f2bd39bf318208be05adfd8c280cd9a63674b50540dfc64e9ff96. 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/NOEHX1612060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa283858772729369cd5d63ea58380db1e657a4e76317ee360b70fda31b363b62. 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/NOEHX1612130.
Suite für Violine Solo, Op. 123;I Introduction - Allegro risoluto
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Suite für Violine Solo, Op. 123;II Sarabande - Adagio
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Suite für Violine Solo, Op. 123;VI Minuetto I
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The Essential Bournemouth Symphony Orchestra
Adagio Sostenuto (2nd Mvt From Violin Concerto In E Minor)
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St. Matthew Passion, BWV 244 - Ed. Elgar, Atkins. Trans. Troutbeck. - Part One: Come ye daughters
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St. Matthew Passion, BWV 244 - Ed. Elgar, Atkins. Trans. Troutbeck. - Part Two: And now the Lord...In tears of grief
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549799b2a5082f284b1190189a9ed3ef7e0862e6973512f5b78c7c4aece726aa. 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/DEE862301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c460c53d89d020b2a59ab5751b92c63f7d3447024e822d7ef3acd1514b4952. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NOCJB1901122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa69f881f2553ce70ba6ed6bb5393e577e59d50e8ed068101f6854f9ffe6c3d. 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/NOCJB1901124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9647895a85031cc19b893c2bdfefbe011234ceca7ec75d0ba8121c65ee92ec. 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/NOCJB1400908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef63dc9ace9e28299e0d0dc8d19720b1a330cb82c9c924b16b3d7862dc057a2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NOLDA9401020.
Irgens-Jensen: Symphony in D Minor - Air - Passacaglia
Irgens Jensen: Japanischer Frühling Etc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377628ded8ab1993a7fb3c1dce285a58317ad76fcc9e7c038d3da807ce494fa2. 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/NOBZV0302001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ca44bfb14c5a65d26c93ab033e9e468c8076852b1a01de9ba5457391acde8. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NOBZV0302007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efaa367b39c0d20ca064e92891e2e0abc64792a15f79cda38ee49e07e35368e. 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/NOCJB1211180.