Ulf Arne Söderblom (5 February 1930 – 4 February 2016) was a Finnish conductor and music professor. He was the principal conductor of the Finnish National Opera from 1973 to 1993 and was a key figure
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 0x8aa63c10cf4eb9ae6d84e99446f2010a3a56079d184124bf46898204a83647db. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/981f5bdb-b3dc-442a-b8f9-1d7cf44aeb58.json and https://artists.proofprofile.net/proofs/artist/981f5bdb-b3dc-442a-b8f9-1d7cf44aeb58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pacius: Princess of Cyprus (The) - Incidental Music To the Play by Zacharias Topelius
Peace - Music For Reflection And Consolation
Vocal Recital: Hynninen, Jorma - Turunen, M. / Merikanto, O. / Madetoja, L. / Hannikainen, I. (Mina Laulan Sun Iltasi Tahtihin, Summer Moods)
Viimeiset kiusaukset, Act II: Paavon virsi
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 0xeb308ac5186d77e4ac754babbde57ba8b2bd112d83c72d51db1af584891299e8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIFIN7800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43ae4b133284d6bc4c222d0677c3ffd34cde0d5b8d6d04715389ad5e21d2ab0. 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/FIFIN9100011.
Det sjungande tradet, Op. 110 (The Singing Tree)
Beethoven / Mozart / Wagner / Mussorgsky: Opera Scenes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fcde5769f08688d3fe3988ff63441ff710b5d048302f51b2465ae519bc168. 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/SEAED8774040.
Meriläinen : Concerto No.2 For Piano And Orchestra, Symphony No.3, Concerto For Double Bass And Percussion
Land of the Midnight Sun - Music and Images From Finland
Paavo Heininen : Arioso, Piano Concerto No.2, Symphony No.2
Paavo Heininen: Symphony No. 3 & ... Floral view with maidens singing ....
Vocal Recital: Paasikivi, Lilli - Maasalo, A. / Sibelius, J. / Hannikainen, P. / Palmgren, S. / Collan, K. / Turunen, M. / Melartin, E.
Englund : Symphony No.1, 'War' & Concerto for Violin and Orchestra
Finland 100: A Century of Finnish Classics
Kokkonen: Complete Kokkonen Edition, Vol. 5
Kokkonen: Complete Kokkonen Edition, Vol. 4
Kokkonen: Complete Kokkonen Edition, Vol. 2
Einar Englund : Concerto for 12 Cellos, Suite for Cello, Sonata for Cello and Piano
Englund : Concerto for 12 Cellos : I Intrada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee71eb8ba7e457b864a3c8573b65fe6ebbdb61198f56ff832648deb05feba3b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FIFIN8900141.
Great Swedish Singers: Gösta Winbergh (1971-1987)
Palmgren : Selim Palmgren : Daniel Hjort - Opera in Six Tableaux
Aarre Merikanto : Violin Concertos 2 & 4
Merikanto, A.: Concerto for Violin, Clarinet, Horn and String Sextet / Nonet / Works for Male Chorus
Kuningas lähtee Ranskaan, Op. 53: Anne Varas, se harakka, onko se vienyt minun kampani?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a4c6486b03cd9d88690a73c54f32617623be743c7cacd6cc9abd522dbcdc13. 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/FINDE0500178.