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
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f58c5782ed4a2edbb65ff604c6c593cf9c1083dc5d8f2b448fe5f8a018827f. 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/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
Kjempeviseslatten (the Ballade of Revolt), Op. 22a, No. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16447a91829502f12edb3bd1c40e9ef88b3e9d104043bb14d092ee61682e63f9. 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/SEAEN0267090.
Ut mot havet (Out to Sea): Ut mot havet [Towards the Sea]
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Peer Gynt Suite No. 1, Op. 46: I. Morgenstemning (Morning Mood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3848bfec42f3586723a327ee33564d3e3a713b12b243a0d9c62ea33608cfdab6. 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/SEAEN0267150.
Symphoni No. 4 - Bookmarks from Japan: I, II, IV, V, VI - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d834dafd4e895e73a83e094bfe7619b2cdb07228885b9ef24fbe86d6c69feaa. 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/NOCJB2400912.
Peer Gynt, Op. 28: Suite No. 1: The Devil's Five-Hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c11e5e0918372d733dc72b322a0c8259f4cd5be33830fce5f1a8680fc8349f1. 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/HKI190236101.
Peer Gynt, Op. 28: Suite No. 1: Hymn against the Boyg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abdb86a6c94e33bbf948fd7911ae85534da20c9d5b05f7a05d6c086b3a50e6d. 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/HKI190236102.
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 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/HKI190236105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061c2202f1910adab7da2cd28a2152f80a07700fa25c82ab3013379ea95b9ac8. 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/HKI190236107.
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 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/HKI190236109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f66e90fb9b70779a65662adad59738991d05997b4d0dddc9cc677a0feec5eb. 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/HKI190236112.
Norske eventyrbilleder (Scenes from Norwegian Fairy Tales), Op. 37: III - Entry of the Trolls into the Blue Mountain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94644ace6c6c39a08ffe3c30d01e91811d05ca6d994886f048d6c794a6d98b. 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/HKI190236116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cda5d31fb00bcbd93f3358c98e3d7369f2225169bcf6bc98e9053e4309b076. 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/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 0xa283858772729369cd5d63ea58380db1e657a4e76317ee360b70fda31b363b62. 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/NOEHX1612130.
Suite für Violine Solo, Op. 123;I Introduction - Allegro risoluto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288fcd6879370bd5bdbef7e106145e1bd59e8baca9e2993c8acc29a213a9c73. 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/NOFZS1735060.
Suite für Violine Solo, Op. 123;II Sarabande - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbbcc53d0b9256e083abee3f4a9a9141f50ba973a4416f784b2a2c08b86cee4. 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/NOFZS1735070.
The Essential Bournemouth Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549799b2a5082f284b1190189a9ed3ef7e0862e6973512f5b78c7c4aece726aa. 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/DEE862301607.
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.
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 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/NOBZV0302001.