Nachtblut ("night blood" in German) is a German gothic/melodic black metal band formed in Osnabrück in 2005. They signed a deal with Napalm Records for their third album. In 2013 they performed during
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 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 0x62c522114a617d19ca146d8318d63a8c5ae3d19b2336b2d305ea38059b0e7861. 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/4ca456a1-6f38-424b-aac9-54b3e2dbb4ff.json and https://artists.proofprofile.net/proofs/artist/4ca456a1-6f38-424b-aac9-54b3e2dbb4ff.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 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 0x89bfdff1e7ccc989726f70f7b9f3cb3154fd5b6b11872c62851eebb34de671d2. 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/ATN261138902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb35d0bc0210c82b1298166635529130080b9f4c69f53939efbf0f003d10ebb. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/ATN261138905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f78edf9a4bbf528f48ef60c632908ac6a2ca325fa73b88d809c90768b57bbb4. 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/ATN261138906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6aec79b2258eea40579ad3fedcd6cbf55298ef27ab74557846c59024d8eddb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:28Z), 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/ATN261138908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7e9c6485f45bc23f26833e10975e52eb780f9697e9a8873a52ea9cdf30ffc9. 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/ATN261138909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cdeff2bfacb6ba06f5131b0405a9f9970d357b64e132e1c6f7cb41f4a161a4. 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/ATN261138911.
Gedenket Der Toten - Hellenische Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13175e32e192c54dbb4d491e914906e0736d0a350f4c52c86ff1e283ca17ea84. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ATN261138913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7384974fff4ae810d9b70338625aabdc61bef31b91d08ae0bffd03abb5123a2d. 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/ATN261243105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fac8a7d15e1adfb21680a50226f2c180d9971936168ca5343326250d8a8be3c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ATN261243108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1372bdf9d7de7bfb8f7909737820062499dbdf8f54e354cc5543de0a688498. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ATN261243109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167d2a2461dca7d7ab0de5dd735c7318d98a12f31a7bf8ca83cb04414c081613. 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/ATN261243110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1109d876e8592ba8483d8b47df3bd0a0349c2c3edfeed85d1b012ab582050. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/ATN261243111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4ad3e4206b4597fdbe1955b27e5911c2ac28c8e75b886567089141d6d75620. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ATN261455501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914166dd54b266ddd37f12f909912b23bfbeeb35b99d441ef2f16cbb67512497. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ATN261455506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f69e42b430ba6e2f35dae3188b35a836cd12c1d5bdac63ae88e1fbb81aefc8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ATN261455508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b64549d81037e4528ab7e3ebc1a67964d8d7d55ae03098f0db6e1bf11cc97e7. 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/ATN261455510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20534c1feda8d2ab68308624a5c929ad4bf2bb8d90996ab01b2a708d11ec82bd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ATN262097501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c8b761c7c2e9260e56a18913df70767e2326799c11d0e6290808f6a04062a3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/ATN262533402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec089d46816eec7ee225e59365b554c8bc757e4e569402a2b1a5e4e47274aa7. 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/ATN262325114.