Jan Wilhelm Malmsjö (born 29 May 1932) is a Swedish stage and film actor, musical star and singer. He is married to Marie Göranzon and is the father of Jonas Malmsjö. Biography Malmsjö was born in
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 0xa26d31d0ddbea75f61c5114b057031124c0b06d57aee2e450c9741548827aa0b. 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/9d7e8eb0-5fe0-4f7d-a3e3-e04b9b6891d4.json and https://artists.proofprofile.net/proofs/artist/9d7e8eb0-5fe0-4f7d-a3e3-e04b9b6891d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd8a5a2042ed59c59fc311c3d66aa1df2ef84ff519fe2fce0b8cfd2ba8d23dcfa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEBGA1601383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cacab0276d4329ad9b2add69e5f5052bdbf8773121b02c77570accddb540cd1. 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/SEPQM0613034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79486088bdde1bfb82f61c2273389b6595ab136be1cd3b995dae3d746db7fb9f. 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/SEPQM0613176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55693ad9fb963ca3e31c05c689168409b54456b53a341109b2cb121675050f8. 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/SEPQM0613178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89393aeb171aebb35baf39d47d6be5af474b357fb8cf5df25593533fd165267. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/SEANF9605030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb154319b205afd02ae66e77075d15a6959124dec25ae595edfd404af89d95b3. 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/SEAMA5858070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7deb5a3894e64fe553f0ba9dbf1d2be84556ff54531dd1c2bed962144b1790. 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/SEAMA6239060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931f8c1381d7887a6a8e00341d233057a9176a2c3931a8d3e9303de2d49e055b. 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/SEPQM0613177.
Noaks Ark (Noah's Arch): I. Gubben och Gumman presenterar sig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c68c2cbe95876e5cc19e2097f665b5a168b7efe59fc9bc0f90a1490b55eb2bd. 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/SEBAA1206201.
Noaks Ark (Noah's Arch): Käre, hur lång månde resan bli?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11292a3a4cd01231f455ae658880f73f306542feb2f4e575dc99393d6f4af218. 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/SEBAA1206202.
Noaks Ark (Noah's Arch): Så kom den omsider, vår stora stund - Landgången ut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c96dceb291c00ee35720989ef703d835892003b5115cc5388f505e506cf1860. 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/SEBAA1206204.
Noaks Ark (Noah's Arch): Hundens sång - Grisarnas sång - Noshörning och flodhäst
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe663419793f7f0593e2773ab532420923e0f5b87fc5d28c7e7b52fb295167bea. 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/SEBAA1206207.
Noaks Ark (Noah's Arch): Landgången gungar så det knaka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1bf900b3aa4b1dd4ca63b80219d137db7656b2747f41431389f0f6242f136. 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/SEBAA1206208.
Noaks Ark (Noah's Arch): X. Havet har lagt sig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d08c667f18c095ee37af81037951d914ef36d39fb2c16aa9886b50ffeaac5. 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/SEBAA1206210.
Noaks Ark (Noah's Arch): Ham är du redo? - Befolka nu jorden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f25a61b207568c5df30267c2cfdf79c167a706ef18f41db9641e7fe62a314f1. 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/SEBAA1206211.
Bli Vår Gäst - Från "Skönheten och Odjuret"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc472504d3411eda3bccd1ce137d5870e69e13b4473334c37691fd23db5f61. 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/USWD10526331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffeff80d35cae57cb8e59bac66c49efe03066e02c63e36b0c0f82843d2e1d6f. 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/SEAMY9000597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe33ab99c5c0eab46056d5e098ee7cf9dbddf5e41eeb7ad1c8762fff8dd747. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SEBGA0900125.