Filur is a Danish Electronic dance music duo established in 1999, consisting of producer Tomas Barfod and vocalist Kasper Bjørke. They also feature many guest artists for their releases. Filur has re
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 0xb33a641a2059a3b0d014114375f75658013c1f8a533ff2e5f69fb1ce72cdbcba. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/094547c4-d6b8-41cc-a45e-b2e8bd0c81b6.json and https://artists.proofprofile.net/proofs/artist/094547c4-d6b8-41cc-a45e-b2e8bd0c81b6.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 0x3f958133df5724a2062403553ed441a6bcdca29c4f7355dc31500d2c2c856b71. 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/DK4YA1080043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88979fdadf49af82b87cdf8af54afc67a5af6e0d09d338000d6d464e4b70a13. 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/DK4YA1080045.
I Want You (feat. Magnum Coltrane Price)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc90cfa5a2c5548d1428a714e2a12d2052d7032dec03b39587b927ebf43ef82. 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/DK4YA1080058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe5f5b0182b69c55a0a75ac1f62a24dc28cb07d57cb7c7e5bdc5b2b9d45df6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DK4YA1080060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7b2297b5b606439eb3abf4a8ea7158d7a7d59922482a7b3be5b1cf92c2c18c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DK4YA1080066.
Closer (feat. Junior Robinson & Nellie Ettison)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301cd6abe1a5162b1d274bb8f381503e56582daa2915afce1ab257b0f64812f9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DK4YA1080057.
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 0x01908637f1058efed49b2ad0395fbd680d18f552fb6a723f10808fe1bb41075b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DK4YA1080059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee407d41af9f31df570ae5facf726341ec80696857c65c73c4523778b576fa43. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DK4YA1080061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46d4e03954c926348baf969a9c489ee6c70ba6b6af8637b8cba860367f450ea. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DK4YA1080011.
In Retrospect (Singles & Remixes) (Expanded Version)
20 Lashes (feat. Prins Nitram) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a74a09560b0b0e2c4d19434eea6832b194480c85b5574d66079d475e3dab8. 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/DK4YA0800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd022e2fdc8f2e12aa52430ad69c4967392abaa96005e151d16e7eb8cb01db5a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DK4YA0000201.
You & I (feat. Pernille Rosendahl) - Trentemøller Vocal Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36d52a883e91055b2af7ae2d726cc4f7748f7c0de30a135b1fafafdd94ac557. 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/DK4YA0802214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ccd9405796b5c9f12f62de47c2e01f215aaba5677204a940575bcdb3baa3c4. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DK4YA0802206.
I Want You (feat. Magnum Coltrane Price) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e29fcc5d33bc36f41446c2f80147a9786211c194c4d310349fdc1484bce3b8. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DK4YA0100301.
Fallin' (feat. Kai Martin) - Banzai Republic & Larry Heard Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5d7d4688e679c5d02fb3e00f56628eecdaba6f9761c264bd34912e25e34af7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DK4YA0802215.
Concentrate! (Remixes) (feat. Simon Kvamm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e6c0d30d90463fdc16a89ca0eb10350d60e46af7fdd66735808daa858ab1be. 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/DK4YA1105203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e994ae5b517ce76dc2d96c036bf7bc28a921f936b1503e3e7f5dae40ee2cd5. 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/SEVJH0805738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e48f6ddef6d841ecf4999104e704827e81569785bf6b9f97076726d4dd025a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SEVJH1200409.