thumb|right|Lars Jensen, the sole member of the band, in 2007 Myrkgrav is a Norwegian blackened folk metal band with a single member, Lars Jensen. Jensen founded the band in 2003 and released a demo
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 0x4e60153ae814d5873639f9b46bf94e4ffac620b00fbee0f6db5baef55ee14c12. 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/23b59bc7-fc1f-486a-969c-2301ee185033.json and https://artists.proofprofile.net/proofs/artist/23b59bc7-fc1f-486a-969c-2301ee185033.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 0x55ada87e6806f754052d20d7d1454b0230d488f62d64f22b7c3f4b2bb5c0ca6e. 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/SEYOK1654026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf334b76cc7bfb0d4b72f89d876cd452a04eb6733f5f58f1a529edd7cee685a81. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1654027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436853312f9f3ce4e3d127e71d8464bdff905aab36b6acec1f96c984d2319f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1654029.
Om å danse bekhette (10th anniversary edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45acf5bab25b16f06d23ce85b8f9916c9706431d70cef0351fd8fe04eee64667. 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/SEYOK1654030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1815d6bbaa5c7d28a7e8d384f3a8a9885bcd74400eb9563db1f108211e354b35. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEYOK1654031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcae2d3e91c0f63b89d8e142f68257a12cd2b3e777892d208eddba56be76a27. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK1654032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37e83f6c9b71f21babd12d032dc8f43b15729b76e7f14594ea176e633ab649c. 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/SEYOK1654034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f201c7b8908fa1d46cdc4aa164680950a45c73a2f5b540e90f595034a85d70. 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/SEYOK1654037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49b8ded07b9f8dbf592ab122daeb6253873356698f1614d7c4dafc104a245c4. 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/SEYOK1654038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020a8ff0a682427af1288ec2541d539e6d90d448c45bf073584f2f8f4bce474. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/SEYOK1654028.
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
Finnkjerringa (10th anniversary edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf468ba4b38ebfd335efda9034a12611faeccb96f5caf42311f660292ba745e38. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEYOK1654033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707a310d77926c0cefcf9fb86d5154afb55ed559dd369323920403da50439a44. 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/SEYOK1654035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f0f44c2cce7d2b9f0fbb0ad859450a1da36adbc6e43e547887f6e3d4818aa8. 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/SEYOK1654036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74c79d688ad2e3ec1b820ece5cd92278d3d5f8a7394ce38ce9f719c31d8ca2c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEYOK1654039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d26e228eaf0813bab7b4ded4a4e15df272e84a979a63732a622633832045050. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1010475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab60a646b572915be5a06959da615ce8da5ef142f10caa61ee08069414db852. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1010476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa605420a310c9bc1b9e6195d7ec5abacb5f363803f44ba78fb07590f846e14. 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/SEYOK1010477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610cce6d2b028f7c4202804029a2c3a76a0ef152fb1e1446c7ed0bc2e27aa2fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1010478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332568b56d13e3a4e439802291a42b7ee5ffbe8c76e5862b85693e0d11fe2092. 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/SEYOK1010479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81733dd4550a936cee7ddf97d1f81d2f29c82da944db6e3c7a0dcf42fb94b4. 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/SEYOK1010480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eb575aa44ce19f629f1b6e0450f098207cb08f9974f7f987ba171f858df62b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1010481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d2c9c4b02f6280e3675ad9f196863aaddd40027ae40e9cb169e70c944c2c92. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK1010482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6e51ec4752339077f0543449111ae2ca75641d78af97a9623358c4e281e990. 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/SEYOK1010483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b592ca2a84c51c395f42c8ce30da5d8111278b9157ed64cf5c7e8d06f7350. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK1010484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb38b574b18c9039f54b18c202776ad4072dac7b3a83e02ecae5ff643f0936f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEYOK1010485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60cfd707639da8a00f7eeee807eacdb52827a8823485f23658df65a73c1b372. 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/SEYOK1429698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c8a305a6f8fa54514f615b89006e1e011521a3d8b636c2155853d5311c7ef7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/SEYOK1429697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a902169e69a0c496262094b56e7e42c25f4a7f1d96a4d21da626ab1c4da13e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEYOK1303864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771699a33b86192951b8a933fdd1e113f9eee8e37c874beee4f1ec537aa8cf8b. 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/SEYOK1303865.
Fela etter'n far - 5th anniversary re-recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8def7c3052ff43d811ec5f406eea7bc82a91de1b069237e5b19d31d6c14dcf. 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/SEYOK1303866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754c257e44e223104f6cd7a6b32ee5ec7f5d51950b20597ab383f8229960494. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/SEYOK1303863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1503353edb0c9f26e92962487fe043ce6931a01bee36c031be7f91994ecc6b. 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/QZHN32252964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf902e01db26c0b41676c349fc641d2d184ca64f61aa5fd2cdfe585cdd13c0ada. 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/QZHN32252965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc27da1edcdeb165d8fd4d17ed001bc53220f8471aa51f1a0263c15c904c075. 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/QZHN32252968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6264e67317b0a4ea34f0dd9c8d1737a7adbd1111b808d274bf99aff1bdd5ffc. 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/QZHN32252969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14755f6e7fa9f8f5a9a38a281d4b6f0de0198892a27d6e7181b147a256d4c604. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZES62222374.