Kauan is an atmospheric doom metal/post-rock band from Chelyabinsk, Russia, formed in 2005. Kauan's name stems from the Finnish language, meaning for a long time, and many of the band's lyrics are in
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 0xa548998f54ce79658e28a03d6ad835102ac2e5c7f401e52b5fc890c39bdfc04d. 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/ee77477c-8e7e-48c0-9a34-81613f2c502b.json and https://artists.proofprofile.net/proofs/artist/ee77477c-8e7e-48c0-9a34-81613f2c502b.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 0x72a2f52a96c2bbb185a0c0677025ecc6091c89d001e7e4e0dc63019824481e6b. 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/QZ5PD1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3bad20015e5469033aface8263f6c523f61f63054c6bed56c60d0019a75531. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:20:42Z), 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/QZ5PD1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6742da951c9e5dd1716368cd0e5f11f4ea30e0375913972d1cd01520f83d3641. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCACH1563934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb79a299371332752891b938944ce84e21787a0aeaa0123c738e13af9319c8e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCACH1563935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ce9d1eeabb6c97967d12a9dc209f33436ef4ed85a09ddb51f69bcb2dce0e30. 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/TCACH1563936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecdd1e127033b6f59af0a86afacd7fbb5fbd4153584b1bf3397223af2be0646. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCACH1563937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb83b69c451e800267c5d982cdda194c6268be35fd7424435a921472af6a0d6. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCACH1563938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3b26818da04a9b7c5f2083e9902a72e4c62c7c4d18d5be071674beda5e9c26. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCACH1563939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d0ccfdcaad3b858180e591c5c05adfd91947fa3f600f3089c937c34410f370. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5PD1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d14847a1581788e24d0d1a120298d56db1221f55d7b6c77abc50c37cb132f9b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5PD1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9ed2cb6c2bd536f863143e97fd973d4f918fa05ee29a9b74196efc2b08edd6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:47:09Z), 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/QZ5PD1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bda0c22e6f52923e4adb5f96ba6dedc3c0b435306485bcbb26ad4eade68ab8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFMF2010294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39de8648dd6bd055b603851aef991aa668d785d3cb22191a54f81dfb9a10f9c8. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:29:48Z), 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/QMFMF2010295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c4175c0718b6b3134bfe52d1ce80d1e62d4299f68ebf401a79c041a43c79b3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMF2010296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc39d0c8e82cbcd20e0dcec40fabe9d16d8c4f534f4e8a3d8e707e9323cf097. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QMFMF2010297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77180a400d11f536c5867c23899116c684f87c3deffd0a26b8ec8860f1d8d3b1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMFMF2010298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cdb8da122c1507259cd6fc96ce3007a984e307f96af1093061ef2166b65a34. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QMFMF2010299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fcbfbaac04ac30826a9a399f82d759445067080c0ffd97849f28dede9642e7. 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/QMFMF2010300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9782d1fc246a77dfc36346f8c2ddc2bbeb274eafb702861fcf0dc4f9351fe05. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QMDA62124364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631d53ad886517be5d7b4b34ba8fc3e88acbbd8b0ea07de646ac6b4019b37e08. 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/QMDA62284570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca9248ad39c31442c3c58efa436ab7a15843a688329d420e0af7a0ba71a456. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:19:58Z), 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/QMDA62284571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39b6d9511596e7e9fb3dbbca412dc9f0c6ea34c7cfbefd27f83f42e70faee37. 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/QMDA62284572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a50bba78ed8cf64fa205dc6095c4fd67ffb01804cf87c9f8a20ff5a8a3b021c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA62284573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72581dc828df860ae1af7d921b17d41d0e73daf60e493056dc0f3b10c876bfac. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:34:55Z), 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/QMDA62284574.