Fredrik Lundberg (born 5 August 1951) is a Swedish businessman. His father was Lars Erik Lundberg (1920-2001) founder of L E Lundbergföretagen. Fredrik Lundberg is president and CEO of L E Lundbergför
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 0x3d6bf1a54028bff26a3f2eaac6daea5bb24d85d8d0c881f4be6cb520d8c78626. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53bc2d56-5ba5-4efd-9d1e-c59568a65905.json and https://artists.proofprofile.net/proofs/artist/53bc2d56-5ba5-4efd-9d1e-c59568a65905.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318bef16115226a670b749c0b605cb49c815ade85ad9e14dd4b7919bae30ae80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEXGF2394058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac51dd565edef9d7b3fd911a570439be2d25333e9a6ca7e79e645bddf242a044. 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/USCGJ1731744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec74c6bf557cf2fdc2b62e9fec90879554842d44f5196afdd3aa83232f53794d. 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/USCGJ1731745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b560ef547dafe9ef496c292a9d50aba031c7ef03011cda1f0db3b9c4bf6b96. 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/USCGJ1731746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02648d7568e0c7be37fa3a92f4f633f530bf463530e7265a156494d356dde1b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGJ1731740.
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 0x5c3e8e17f1cdf808d6e507b8b98e42c757f49935669557cff6e08ac70f7c1b6d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USCGJ1731741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc3cf83df3806f3f1a0ddac731e6b07178c77b2403fceb85dd15adfafb2e4ff. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCGJ1731742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43967c45fc10be621b000854414fa5e74d168a92123c1dec3fb55625ccad42df. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USCGJ1731743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f3cb82fdb7958e6ab4e84e2769a8c37879052009ebff0a19e328359c0b1649. 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/SEXGF2394246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7acb1de4443e8e24338a85a7ae512f42cfeec36eb390796916338e181d2eed6. 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/SEXGF2394110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723db6ef3e4a4eed5971259b2783f8a248af761c27393e3dbfe28ad9e1500f74. 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/SEXGF2394109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaf2c423764216613f82216d2b82483fc2f138c1f18f0e275db065ac84f25ab. 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/SEXGF2394062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef7bd2691bc57611cb2c9f5adeb37fc18e38936f6abec4c0062a4acbfd1ef6e. 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/SEXGF2394004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11662370dd64a54be8f1705648f137936d91d318a01b81a168b9a9a475a43035. 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/SEXGF2200748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b8426e542171b9a2e9b1ee7dac2bc87678e4e9d156233dc712c9b7818d54b. 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/SEXGF2184701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cc94681dc4605a8584cedab3ad96d925e629c0ea8b0656302295ba4f5715b3. 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/SEXGF2184201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026cdce41c67ab88e7d9e5f5a582aa3eed45d6785b1106239986ddccd01097cd. 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/SEXGF2184202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a4f1b1c21f408939b55f7130ad2a47951348747bf41d9ff52b864ade1c1d16. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SEXGF2184203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ac3f6449ca31f04c44562b9e3d93874246885150c420c7d2cce36fa680c774. 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/GBPS83877162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc866e21c8d95ef049271121015d77818e8da31e41a6f5a8070ff544e37d34a34. 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/SEXGF2035601.