Krux is a Swedish doom metal band formed by Leif Edling after Candlemass fell apart for the second time preceding their reunion tour. The band's formation was announced in March 2002, with the involv
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 0x9ef866607e53e2d5d2c99f94ce967f1ce8c2bc354df68740bda80467f321e9e0. 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/e39bcec5-60ec-478a-b940-bb5a7e6d8e8e.json and https://artists.proofprofile.net/proofs/artist/e39bcec5-60ec-478a-b940-bb5a7e6d8e8e.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 0x71260d25b8780537e94840eb127c0ac2e0da8ba96522140a3632cd530736d51c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USJ3V1136387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdd54e5325da5b1b0be3b9c9f30d629194f4603a4a8efaffe1b79d6a3404b8b. 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/USJ3V1136388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb2648be119da9f38c5975a2cdde59c6dc2526bf011984e41fa0e0366e00074. 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/USJ3V1136393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ce4f41939b9ce19cb6695c446bcb4e3e540585e60415f6d0cf22eeee5a1ac6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USJ3V1136389.
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 0xd442368819ce3f2da84d3e71d0695cb2094435e8c57e92288558c3f5cb910c4e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USJ3V1136390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7becac278b5c0192a622f5c19216ed7b0c3687ce6560268389a0a3fdfd514ac4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USJ3V1136391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa396f84607a51df50c983dc79e68262e2d3211715c6c92eb4231b13991d4a2cc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USJ3V1136392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3518470a0d0d79827092857f662582c595da0bf1809136743ed710d7b777418a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USJ3V1032739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ba5469f061d763a8e5342c71ba5b6c8f91fc81abe52063137dbd6bb5a80ffc. 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/USJ3V1032745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b0db74bd3925d88b7e173ffc2ccc632b48b318794ad988756e0f7066f2234. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USJ3V1032738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a9bcff9f767a725325a760c550f4f09681a4983ef20b4ca6cc037c7a4c82fa. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USJ3V1032740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb840fade6490a712c6112777d70f9a486721b21688749e3896dce52e917108. 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/USJ3V1032741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886f1bae02e01b62100c2c3f7f66e47e5cf422c11a704f67d6bcd5d395d5d7b2. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USJ3V1032742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7823dc785325514102442208783fffc83a3415b4f66999380e42067afd67d013. 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/USJ3V1032743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed82a686279dfa96b6b641aa16ea9ce36261228da5bec1b4ac2601d27bf6a00. 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/USJ3V1032744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e92b2c32f370c7b4ad2a116b4bf5745d9dedeeb3e812a33b60033457c7baed. 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/NLB930401370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78d62d9d1f82d351dea19f8fd4a7b8eb23ffd087838eae9ad01b491bd04ef6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLB930401371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8f133c2c726acb1a94bb4a62f03e39c755a86bc824c9c577b474c76d60ab51. 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/NLB930401372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4454a8298356d3a8cb1dff9bbd34d3e5115f464bbf423e8c28c0d63a3712cc18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLB930401374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f568c90763c88352b7b728285c57da4b1461932c43db1fd814ad9d4655016f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NLB930401376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad165458337808ace6801d9dd66f805177e0dbd20683528f5db92fe06b93308. 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/NLB930401378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1886abc9b779ea6ade52214a750bb49e33a26fe41fee5f38b2956ef8ba84231e. 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/NLB930401373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9702a33b4427a87cae1c834288f0bda858a126aef7678c75e40aaf9e27546f7d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NLB930401375.