thumb|Klaus Lage Klaus Lage (born 16 June 1950) is a German musician from Soltau, Lower Saxony. He is known for his 1984 single "1000 und 1 Nacht (Zoom!)". Life Klaus Lage spent his childhood in So
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 0xfcb267f60c0eda5a83886553ac65e77d93d36fa8195bead1755334ae208552c7. 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/761e1f85-2aae-472e-b963-03d96987f8e9.json and https://artists.proofprofile.net/proofs/artist/761e1f85-2aae-472e-b963-03d96987f8e9.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 0xa2ac716482040b7de51b17f22617bfe63323dcb83eedce4a95b1405fd6a79e04. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/DEA341100548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a059511f0f9ee951a40fe99d91d82747ea35a00181a4cc6e0bccf905a13da2d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEA341100549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776694da2e613ca5ad11d53ed8650232f1fd9639c0ad1cf3f1a3e5b4a613763f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEA341100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432e0517d3b1b4bf6393c21f67bf24b019d442491de59087a7d922ad6767e0a6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEA340700757.
Faust auf Faust (Schimanski) - Extended Version / Remastered 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f94f5d33a0c5d07511f5cbc2aad62866685869f8f8578a5ee582e6bb1a5f768. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEA340700768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88dc5bdd910afc208d7da6e6059da87584440e7b416fe2e943568c612fd7de. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEA619453100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ee154b5f29a1ef0f6a72ea54c8b4dd6941ab516c0d07626e60f48b63a4fee1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEA619451761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd93564a99e0b06771a959aa798efb49c67678e4b16b95e90adbae8e1e1f3657. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DES530100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3479a04a7c87d4b92457dd820973f93ef491c83c5171079ea9eb53d716203d. 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/DES530100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c99f7d16112ff5b284422d7843f7860e11c539f501a89e4afc4b576425fdf54. 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/DEA340700770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b7d5ea57a94b5519b0b2321caa0336476b9d70ff8f1008bba12d89cb5e621. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEA340700773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374cc1794813d8d2b5cae27822c5846e09ebceffa06b5cfe2e1de3426bb22bb8. 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/DEA340700777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c24e161192bbaa33be28f10141b2cf024f689434b92bae2535b6cc24273ea33. 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/DES530600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98c6bcc17238fe7850fbd617da4b48bd51afca1d8bde5266dad2452cc762c4f. 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/DES530600125.
Du hast'n Freund in mir - Re-Recorded 2006
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd493d1b8f4fa9a49e40a44ff1a2696c31f84699144d3e5850f22d6e0ee2bab. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DES530600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70131164738708953417d3a54a9a69901e0618d0ec1f948e00a554b8494b3dbd. 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/DEA340800666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16404dcf7b51cd228704deab5b9a7dba0913cde57bde0f474454a52cabe55945. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DEA340800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e91551d27b595f3ff26ded9c09ca922e5b0eb32e0e4dbe7fb8faf8097efe9a. 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/DEA340800669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e4bcface3d053f02ab7ccc768a93c60d69ab57f7e86186457b11e31fed4d76. 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/DEA340800670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b528121843dece1844abc36ddce0c878d16f8138ad7c2c328837a9479223c2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEA340800671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568429e508e7ec56354910f0a2302c8f4193423731907f99e34a4f6c2f595f7a. 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/DEA340800673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0e92399590a7ed52a98cef78a4c05303e622db1f026f64f4904aed06e1c42a. 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/DEA340800674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e70b6f53fba3a8fad273202a15ae367c70304d0ef610b38827e1ed91b04c7f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DES531500008.
1000 und 1 Nacht (Zoom) - Newly Recorded 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa695b692130147168a332437a4a48d92191c3e22831fcfceca5d6c74f2cd7eb3. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/DES531500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedbae92e9a370257241a59e3c1ccf94be791d49747030bdc75beb1f01e01d3a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DES531500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a9c5a6332c294fde3742616591f9ef5415a7ecd1cebdb300702a44da1cf72a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DES531600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c8e9f522e8a66d7e1a19967def94fa6bfb9007b5265aa9e078e6b977acfb18. 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/DES532201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1893c13cbd14f72999cf49df20782b73c7746e197071cf5e2cb0534b407cbb0b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DES532201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d3a907a1ed7ad7d80257737aa16b5cccac0fb74b7cc981a8760cdbc30a8b3a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DES532201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9db0d77b68459d56bb57ffe62cf7094b1270b05db4d76cb059a9fba3054f25. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEA348400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9db0d77b68459d56bb57ffe62cf7094b1270b05db4d76cb059a9fba3054f25. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEA348400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9db0d77b68459d56bb57ffe62cf7094b1270b05db4d76cb059a9fba3054f25. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEA348400330.