Tsjuder is a Norwegian black metal band founded in Oslo in 1993. For the majority of the band's existence, it has functioned as a trio, including bassist/frontman Nag, guitarist Draugluin, and drummer
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 0x48a0c71a7e96e8e8b6b48b5bd40933867cd09bcd39e9f71476251addeea5c65d. 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/f8af2006-7bdc-471b-9788-f150b3f6a2ce.json and https://artists.proofprofile.net/proofs/artist/f8af2006-7bdc-471b-9788-f150b3f6a2ce.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 0x424d574bcae9a9efa7f9b6bd2f5ae84205be5752a873efd9c37cfcff29855035. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/FR33T0509203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115770085d7fa5bb8776cab5160a17d2f4eb98722fbd218ad269c9cd3091999c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR33T0509207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fd27f56cfc96fdcf88257903b2d4eab9d7a2cecb5306de37b12d42d38dcd2c. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR33T0509208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dac2d9372de937b7ef4c99aa9b59645ecf0c0cabb820f9a8389f1bb0ad8f4fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR33T0509209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8eb36956db4ea7918a3f2615295292126867eff19f54fd47536fb1693cbe0. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR33T1124401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7b0b7e513b646704756a8dadd7d5a5457cb6536b0d30875e8357fc5cfa3785. 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/FR33T1124402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0cda8919e4056c0fe727e092558ec59c74af2adb139bf3848c08ecfe63fdd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR33T1124405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f3293dcf4c4ddd590750fbc4d02d700b8da062414b913780946ebd84fc6f9d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR33T1536401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39742883556004bdbbecb3e3de4a9f323f55c11eff981f3ad872d2cb987a7333. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:46:04Z), 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/FR33T1536403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934a18e358fb39992cc1ae05f5ca3693a1a880718ee9ed5e19ea6801029adb69. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR33T1536405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246576aa65efdf96a3a7b236f113313978ed1fc01a3a37267b955e734013e34. 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/FR33T1536408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3c32097caa88659ea42833b01bb68c02a06246f17e447d1ba9def3c5d2d41f. 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/FR33T1638301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7d429c0f18b2f127eae109e6ae9352f6e03eb5cf60ac5eaf4a3216439c9bfb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR33T1638302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c751aea4a0339ab9d0158084692c4e0337a1a063c6f6e62b46f9ef2bc870359. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR33T1638303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d23718226f24b9afed8a78c42114988450c66e87db7841cf7b8ac89bf1500d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:32Z), 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/FR33T1638304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac8ad49bcce46c6f236f37b17fff35fe3ada410e9b6986144c3455882987863. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:38:09Z), 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/FR33T1638305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dea989465b7252027fa853f684a7cc704e1a6262d179dfa0f8ac7e521f35750. 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/FR33T1638402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4858439dfb1366a18e96838ac8f6ef517694650f34ed49fd6bdfb955c49606e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:50:54Z), 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/FR33T1638403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b67fe1e2cb557b292782e6fcaabfcdf9a25073adabb16ea72d4c9be0f775cef. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:15Z), 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/FR33T1638404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75c30e7cd554b8b35f8b1da6cdfa69b06257749fd7e027b8304082e065a7b55. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR33T1638405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d100e3c5afce96c46fedc4d9cb73b4cca64523c14d452196393e04b026fdc5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:10:01Z), 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/FR33T1638408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dff10301019a3f61804bc305c93ddb25779bc927d9af167a2fa0997a46ad1c8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR33T1846302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bcef8f4617c5c927e0e455e3dfed461e5e54b54fc471fe9869dba9d908e46f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR33T2266502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3530ff67cb2e284829be92f9cb7393cac11467d9a2a27071f27dc27222947c92. 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/FR33T2266503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9b664bfd817c6555934a2d1ab12727a8edeb80397972366c3a6ccdad09fed2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:06:09Z), 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/FR33T2266504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5452d4c585c4fea90d2f7c33fed895e93812d0c6fd16957a1f1fdd08c475f737. 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/FR33T2266505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ed383483f28c4153ea6af9e8b1d46062ab70d3fcd48bd297d5fa83e59d6c9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR33T2266507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900b57564b041ec663a04c1d4a7d00743fa83649e29d605dd1761217fc98ab69. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FR33T2266508.
Live At Wacken 2016 - 27 Years Faster : Harder : Louder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1bbd0bc4ec538aba617ad0356058711ae96327f172a077c4ba726bdcf78d4. 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/UKKY81700009.