Einherjer is a Viking metal band from Haugesund, Norway, founded in 1993. Some of the band's albums are heavily folk influenced, while others have a more traditional symphonic black metal sound. Their
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 0xd712fec8fa049dabe9aa9db746bc448896037c6bc4d057f3a31d11912bf0626c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/478623f1-093d-49d9-b2fa-8fdcba9623a1.json and https://artists.proofprofile.net/proofs/artist/478623f1-093d-49d9-b2fa-8fdcba9623a1.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 0x54382fa188db4dfcfe1b6a939527399f978f7ccb50585a88e381407b7fd99f10. 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/US4E40589701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a23696b88c4f127aacfeba613beb4ab81b492cb038eea341a21f435bb06126. 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/US4E40590602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced04eb20cd0e5418e7a2d1370546f14518cf2ba81880a155043973e54d3ee38. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US4E40590604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb629a4e5d837cc64a5b9995f6199852891a56cdfa24b81004dc33313a933f7ab. 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/NOTAB0301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8a35e03198d9366b2d7c208597641011a14b6edbe9a6dd522760ea242719f7. 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/NOTAB0301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d6386d9d5647c45a00f03b18a39d2ebd656f880022ffd14ef81cf7177f7104. 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/NOTAB0301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8709e4cf4f3a5a609bf9dfd369f5add56dd6bd5d3c68351787bda9fe35d9feae. 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/NOCVC1160060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a3bc003b35067525a236e9546732bcf8d27f341feb9f6c58573995eb1e43b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/NOCVC1425030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04788d8a6d6b29d5e4fe1872b99da86b9a25e8c281efa71112ec5ce439e3796. 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/NOCVC1675020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31a78e64a82888d80a986bbb1ab289c7ce6206be35653b7c25eef54467a9284. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NOCVC1675080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d028c9e6549f294e397953e4f9846ff1f4a828932ae9573ec26cb2a9c4d54c. 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/ATN262194902.
Norse and Dangerous (Live... From the Land of Legends)