Mathias Eick (born 26 June 1979) is a Norwegian jazz musician, and the brother of the jazz musicians Johannes Eick and Trude Eick. He is mainly known from his releases on the jazz label ECM Records. H
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 0xe01b572134805434980df2923ff0cb6e4dc86c02b11896db84382c79e73d3639. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/858a8f10-4fa1-4924-82c4-add735df429b.json and https://artists.proofprofile.net/proofs/artist/858a8f10-4fa1-4924-82c4-add735df429b.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 0xcf4c84604167c83f5eaa08c8c10c4b85c1d17cb6cbfb61b9a7348c21e6c8d635. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEB330705903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e6a01514c3427b6a3e498f1b153cbc6c518785f4067e8b9c3cc49f7f7163b6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEB330918701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f5ae7eb2592a39f02677e9f100d910c594a097f85320a11139f29925371eca. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEB330918704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95f3279bdd83a83dcefbbbb07b6525d599147908b7de2d8fe3336f3e909f5c3. 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/DEB331441001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa6d9ce433738ab25a41851e887104d95fe0f7f4f89e4d79ca0d7fe0dfdf907. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DEB331758401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569da834913374c5ca000e6244ad782ad8c56d11ce0c9234c3dba46f040d559f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEB331758403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cc74ee42af24d8ffa38e69728f878c6901067aef7ad9707d17f453f593786f. 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/DEB331758404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159aff2a14f4e90904e3643e2f866b846b4714697518a2de954b9ad9362c76be. 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/DEB331758405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cfe1ca8432b73b52a21e103c6467c395a7568a2d48fe9be0a5c87d83803308. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DEB331758406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8e306dc5db59765d03d9f0144eb098b14c79137f988b1c2bfc8b893da457c9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLL6T1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16257ec096060e1a19563ffe05dc9b2de5f4e88db4c4eecf636c7f49e86b21d7. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEB332066001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f6bb21dcfc509d3d07f3a78fd29628afa6093dc21036d7e8ac022bc824e1ea. 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/DEB332066002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0401be82944756587def0bfd86028d17b34941e91576c76227e36d6df1e4688e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEB332066003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb2c94d034b2a4f5e767a4b31ed94d00012ae0d18fdca93cc2e81910bcb7737. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEB332066004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f4cf3b841e781cf426db73c1cf4c2aa4a2697bd010d185c506713cce88833e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:53Z), 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/DEB332066006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d09d46f86ac6cdcc9792fcc9a26128c094188958790042507fd01c954fbef7. 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/DEB332482501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bc6919a440520690b250c27291004578086a9d2191e10487b9305ffe15c471. 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/DEB332482505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c3b1da2a0c34376c6d1e90802393e5bfad3f3593a1d88cffa71d52e6b6ee59. 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/DEB332482506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d09d46f86ac6cdcc9792fcc9a26128c094188958790042507fd01c954fbef7. 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/DEB332482501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd6db33846f6cc083ee9393aa4d6e21e8d5b67424ff333b72f7be4f6f006556. 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/DEB332482502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bcf262c97af6c6077dd27c9bdedfadbcd40ad5c6d85ccbf1282b42627e0570. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB332482503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702864c8ca0c88d7a9b15e8ad094b25ab344940ad57728fa83204859469f8c7c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB332482504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bc6919a440520690b250c27291004578086a9d2191e10487b9305ffe15c471. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB332482505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c3b1da2a0c34376c6d1e90802393e5bfad3f3593a1d88cffa71d52e6b6ee59. 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/DEB332482506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ccfc7243f9b194590c1f9a2f01439bcf83ada8aaa539dccb0daae2d024c894. 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/DEB332482507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefb14afb8e79de9d6e01f571346ac4ec6d0bc40a877bdd88af3e0a691184705. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB332482508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a41df6ca13c1352f9fbb11fc8dffb58c6a7294709887d47a5f6fca64da5c9. 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/DEA891400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7516c0a76a4fee1c87e83ce8b181b06a50b43bfd5de2f2158c412b99fc7ef3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA891400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311d0a7a1def7648039efbc0c6f86c4bbc66eab24da93733614876fa39e21a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA890900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e08b27329d8c4321b5d0cb964421f4a7087dd9822bd3f30f0a11fb054e996c. 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/DEA890900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7c42f75173eeb5863261386e61b3be290b09d2534a04afd62b1a16271a5f3e. 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/DEA890900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79edd5f861f827a7c1735c13c427cb827b45a041937983cb9ed17983088e8d95. 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/DEA891400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89badb9135b374ce01beefc5f9798c3cb01543da9ac2ce466510c6be53ad9c0c. 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/DEA891400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc9aaf67afe431673bfeeaef4548650369b14ab68c077c41ce29b37f279d6d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEA891400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bba953408b37ef7cc4d870d8f0cafb10b7610f696d257bd4380068c1764e61. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEA890900151.
Liberetto III (with Grégory Privat, John Parricelli & Magnus Öström)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea665686b70a24a84fdc71affa2e953d00d5e787640545a2a619226f42fe953f. 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/DEA891700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585dd1026a3a50d5be03515c961d068520d4e74788406df3e739b3aa92ecee3b. 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/DEB331441901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0dff1fa115d1d9279f1b92b3d2038d7628fc1712f0c38b72e0c4950b00e540. 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/DEB331441904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d89ab607a5c6cc7572e7f18ff91d932182ea8db280643a94a7188290d04556f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DEB331441905.