Borknagar is a Norwegian progressive metal band with black metal and folk influences. It was founded in Bergen in 1995 by Øystein Garnes Brun primarily as a black metal band before later switching to
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 0x562699541fa31bb727de116ef64ea4cd7a67eb3ed864d4b01e6144b35718d4f5. 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/f020b3a6-6c67-4a7a-86ec-82c4818d9a90.json and https://artists.proofprofile.net/proofs/artist/f020b3a6-6c67-4a7a-86ec-82c4818d9a90.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 0x7b3b9802c9e9105924a7e3c0b6112317e359698d0e3f51251ca27290ae292746. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:22:35Z), 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/US4E40589501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d42cc9df0f40cd97de1990fe286cec63d6b9a129ae1da87bc40793d20006a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US4E40589502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fe56d98a11c24b34237ad4485cbcd04ba645ea0e4a830cb3063cf0726a656c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4E40589504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5208b5df94114fa306588c1ade231789c8b60b713ab1ea1b8645d022a776c6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:39Z), 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/US4E40589505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36db352ce694f0e95ec46b6b923dafb22f1ec2a822cd4cad3efe5b3525d4d26e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:15:43Z), 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/US4E40589506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964cd07dee0e4d80f34aed85365db49cefbdc28780054fe2cf602bc9c7eb3088. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US4E40589507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660a27c9cb8974974d2b46d00b62c357b148ef2d49fe1158926559b63a0e31bd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US4E40589508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f503578a8de3e8d84b5da30f31a6fdf699e3d5dffa196fb5a0d5388e4e58281. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US4E40593601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf7baf914586b62a8d0ff5b36e32c8ef7d51bd0e8245a5ddfaa59ecea0e523e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US4E40593602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eda517e5ae4226658458878cb4907edebab296d669952973764da31c032938. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US4E40593603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dbd4bd41489f3dfac64d4a55a23632b6a62ce9125d3eac90a8c898686e46ee. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US4E40593606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc4bd1c98c2238b131cdd41eb83f7d035b0f18610eef7e5a136bf3ccbf5ef0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US4E40593607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d0a76647ea5ccba2efbfe7258555d5f5eceae107629b08418534b92377996f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US4E40498902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c758f1511730e0f725d29f5747e0bfa2a5c04f201327a6a9908aea445dcff7a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US4E40498903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb29d761df34c96d4a4ed3beaf22a5879ca01b81856118259347f87738117ae2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US4E40498910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374e3edeab2cea99616e24fc171a8a95910581b4054dafc6509f9103f66d37b5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/US4E40409901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32745e0f97933af77b43a7047ac3165bef6528c4da3a92f3541b28f7b0008c3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US4E40409902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5632c015da41e0f61c3e48b65594589a3abdd9bb5293300cb5d4735231062bd8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US4E40409903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ca5c113febd38e2b692ac9964983357941315d0a25f041ab93929c3b2e0aaf. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:52:25Z), 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/US4E40409905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2181d761493a47732ce33d8c18c21ab4ae352f0fb8a9503a22a65d9eb1813370. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US4E40409906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dad1dc198aa65092550d25191f2ea8c1d0fa246de079827da1f5b706d80ee8. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:40:20Z), 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/US4E40409907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e712ddc4f343a0679bc2efc00067db0787e44d45b1f6b8ca83815fbad81485a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBDHC0404991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa257c1f828bf85cba8bb0a4836f5fddd635ffd5f6a479c01db5b8e8efaa082d0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US4E40498904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e55e56bbc70486b8bc9396cbd8c1c676aaeedc2a75283302e7b2e4f5dfd0aee. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/US4E41287001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4083ce4868e01f08b3e628f031d1b217e874e4fff88860eff4cbbdc4052174. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US4E41287002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982995d9dfb55d79848705e2c715da54f50ecae2c08a3b088ef25973aa6e1bd8. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/US4E41287003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7642add38318158b936437e20140806bee3abfb6207e8bb2ce73a5737a139126. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US4E41287004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58760690903a8682eff8e3c185bacce6249524e9608f1d8f82518f694e77de0. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/US4E41287005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a135ceed61f687f937354fafc09a514a40d81aa2509b8eb6e4c6eca52f57dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US4E41287006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aef1a942dfaa24c6b7eb6fc4c72ed4d2fbafe185e1f0159c520daba447a62f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US4E41287008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefabc0e68d85c3ee199808ce8afa44d9872268d7813282e2b4bf0470f2ce66b4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US4E41287009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6f79c777cc94a16cba09015a7074a4e92dbcf97311cb6ee2f41ec75095f52e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US4E41183701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85677d29cc0e04c87aff379e1a1308e30ee57ca5988b4ca73cea16c502258c8d. 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/US4E41530004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c279e540fe039e70793cf9e60581758f8c4923ec983ce8a7abfd09b8f750f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US4E41530005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9655617715dbb7c8c9ef03b03978bdad355dfdd880fb5ccf4cd2764fede1b53. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US4E41530006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c6bbc721de6e94af96beae70adf4099857d82a3739b3c8af645467e2e5bb8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US4E41530007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21068c748bc289d4e261aa9283bf8f25c60b6ed2e385c4d47e7c65ffb74c2295. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4E41530008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5922ae3f5dca8774135cb76bf7759e80bd29de99ca9a66476da0e44ad3770. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBDHC1908806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa380f61f0a492e87f5e7741ac7d40ac292cad20d940c9f3bb1a06562760145fc. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBDHC1908807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae1d0bb12cc4d525a199aff39cd819f418fcd951298eeaa87f419411caf801f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBDHC1908808.
Borknagar (25th Anniversary Re-issue 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7019d3b4553114afe79014ca1a67c133d2cdfde966309ddaa417fcb7c868bb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBDHC2443901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b076367765a2f80f247a67341d71aedff704c8a325122c6caeb633ebfa32822. 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/GBDHC2443902.