Frans Bak (born 7 February 1958 Copenhagen, Denmark) is a Danish composer, choral conductor, saxophonist, and pianist. He is a graduate of the Royal Danish Academy of Music and has worked as a jazz pe
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 0xe57efa163a2cb1ab803eb2b3335ad3d568e317083d42670e2890b2c7791de142. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72c6a71c-3883-45b9-9fb6-2dbfd764c42c.json and https://artists.proofprofile.net/proofs/artist/72c6a71c-3883-45b9-9fb6-2dbfd764c42c.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 0x7ba17aba438ca6faf91cadf4cd38d918473291f5db3ab5a868b95ff1ba8601c1. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:07:01Z), 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/DK3KA0100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069067bfa80d66ae91fcd7479eae20e862d7c7970ffa991eb301017476325314. 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/DK3KA0100410.
The Killing (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be2b1508373290425bf85832545e37ffd9e18b56815a1e633f3ed6535c5301c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:12:00Z), 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/GBUM71204597.
Disparue (Music from the Original TV Series)
Doctor Foster (Original Television Soundtrack)
Bak: Theis & Pernille ('From "The Killing", DK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebf71fd980da04533713d7a8dd5d9f0c090261fc49ec0e225fdfdae56fa036. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:47:07Z), 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/GB3TH2000001.
Musik af Frans Bak - til film af Birger Larsen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53cbcd7a0a51d1ccabdd3527f23fab273b6ae1abaf95a5509cd111e1eff0909. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:51Z), 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/GB3TH2200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9984b5b57af1d8a557079320dd8b53399e25787489b254d141c22cced0e6f14e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GB3TH2200054.
Geborgtes Weiss (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e968fab60c37b11d7ff6874da68755002b2a007f40ac61a65677f4ab2645af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB3TH2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc88ded7c45e80fb67b5bb9da1f0c0c5f3acdb51788b717c5828bb6742557cf2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GB3TH2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae65e07041e5eef595db774660a4ffdb1dd8097af515842907a6460aaa487e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKEFA2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7a1a051dd36825e49a5097cc5192b3189f7c149d6ef5ec2d9db6cf77f7efa. 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/DKEFA2400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b71d8fc24cfda30b4eb2f98bd1f91ff418459e819bff87ed6f280e84268066. 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/GBUM71700636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63617a2adcb44ec5a4598599cdacd0ebde13ff3c62078354d3be23587c7e237. 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/GBUM71700637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccfba465d87b4692d394772392ddb53095e93a4e5d9b3f7eed8bf7d47d1950e. 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/GBUM71700638.