Jerker Mats Johansson (born May 19, 1956) is a Swedish investment banker and was the chief executive officer of UBS Investment Bank and member of the Group Executive Board at UBS AG between February
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 0x9880f86b98a82576789f7c7bb5cbce6a2f8c960f514ccfa8698e06d71881a9a1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c2d5ebe-0804-4621-b935-a399bf540369.json and https://artists.proofprofile.net/proofs/artist/9c2d5ebe-0804-4621-b935-a399bf540369.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Skona Grona Dagar (Beautiful Green Days)
Frösöblomster, Book 1, Op. 16: Frosoblomster (Froso-Flowers), Book 1, Op. 16: No. 6. Vid Froso kyrka (At Froso Church)
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 0xa9e15ed7284a337f6f119b92424d45d9ceb6373558826cfee998ef99afeabeb8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199310704.
Fredmans epistlar (arr. J. Eriksson): Fredmans epistlar: No. 82. Vila vid denna kalla (arr. for orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30373f62c82df2c9f7f69f0c6eaea7ea0cffbdcc1568737112273679f7c7d738. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190592919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787240caeea387e23e1dcc431a4ff51b6ab8ebf3f8071b06b9fe724f99d98865. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199590802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8e3afa7fc22e409671954eafa9796932a1a947102e970d6f476d188bdf20df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199614201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21352cc4de8564a51f052fd94a1d15c46c7572c13e41c97513714473c2cbf90. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199324605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca4e2f5949aac246c17ab3b6b360570988a5fde2c65276fd42e25d35f95f1c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199590808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e0ac9062b4f9f0bfe37c239d109cd2d9cd4fba200bc65e6bff7ad9f899ab4c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190592903.
Consort Music: Consort Music: III. Ballad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd8a9d04666395d6bfccb7f39a36973b2f0eba342fb65baf967cf0e9136b7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190029918.
Pavane pour une infante defunte (version for piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93d377dba47db2e90da28f9648c2dc5f3388b62c7c26618dbb1b4e5c61ceae3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199290404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523d12910a7d0220a1ae50f763dacaee5fcf5aa5938f59151f31ebe57849180. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190592908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc48602a402960ce0de26e0dd9e6e331a75c44984caf4221d03faff16c64733d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190592904.
Cello Concerto No. 1 in G Major: II. Romance: Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040c25707d788f9f9239db13da86c08e118663c50888188354db3c6f36f0df3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199312202.
En vintersaga, Op. 18: En vintersaga (The Winter's Tale), Op. 18: IV. Epilogue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861ddd6cc4bd61826e725fce5e41a6003cdd7d09a6df26b6ee59a334d3dd810. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199314606.
Beatles Concerto Grosso No. 3: II. Eight Days a Week: Rondeau (in the style of J.S. Bach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863cf80df6ff3f5694d6c1d731c7d8e8af95bb9a70f48e6c8960ed3da808f2d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190005112.
Beatles Concerto Grosso No. 4: III. Goodnight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda0aae9a72b63c04f62404dc4a00f2aed5a2b4589efebedd828b2f9b25a57bd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190005119.
Gustav Adolf II, Op. 49: Gustav II Adolf, Op. 49: VII. Elegy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d137c67593e870763ca5ecf141040d357019c3a4b4a25f2c0f033033e49bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199314613.
Gammal fabodpsalm fran Dalarna (Old Pastoral Hymn from Dalecarlia) (arr. J. Johansson for orchestra): 2 Sentimental Romances, Op. 28: No. 1. Gammal fabodpsalm fran Dalarna (Old Pastoral Hymn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac36ea55ce0d3ce79b2825540e134dd9402d67c60b3fde8314d897c389eb83. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199809309.
Saeterjentens Sondag, "The Herd-girls' Sunday"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04334a3fb64e87efbd407fb002101e59b547490a2d526e302ef9c0481c749e66. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199837401.
Stardust (arr. L. Kallin): Stardust (trans. L. Kallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b4ffbd4c12c8a7baf0fefbee6cc6e20e8ffa615c3d50710de2e97dc03d67e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190537505.
Sången, Op. 44: Sangen, Op. 44: Interlude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1bd1b719eda9dd278c8b948f5928685ff68564cf5eb93e7b0455dcdbe6c574. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199314602.
50 of the Best: Classical Music for Christmas
40 of the Best: Classical Music to Drive With
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bde2e63394a75036c61d89adabf423c2adf2ed40003da2af0262a1a9db4404. 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/HKI190456116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2e2dd5bd6a866a87c527a116b952b676317d8c4d58de3249bbeeee6cf710c5. 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/HKI199706601.
Svenska sommarfavoriter 3 - Om sommaren sköna (GöteborgsMusiken)