Kauf is a surname. Notable people with the surname include: Jaelin Kauf (born 1996), American freestyle skier Rüdiger Kauf (born 1975), German footballer See also Kaif Kauf (musician), American musi
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 0xcc82569ace9659d2ce3484ad50643d660ff76522b83d7b17509caa8580ace5f7. 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/1383bd81-190e-4a0c-8675-83c553a17bba.json and https://artists.proofprofile.net/proofs/artist/1383bd81-190e-4a0c-8675-83c553a17bba.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 0xd747ffe2bbbc8e5eee7affa12e216a1f2baa182ff004979d138706dbe23eb93b. 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/USQY51769504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b49dbc8f8849aa8c122dd4151460a3f110be6b60a3a370c6cf66656f8f877c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:44Z), 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/GBKPL1671523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18284587e1160cf2e5a5adb2164f601afd1921461cbc063ec169123eba845ab7. 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/USQY51769505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd747ffe2bbbc8e5eee7affa12e216a1f2baa182ff004979d138706dbe23eb93b. 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/USQY51769504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d785da49fd9e145916726e4a7634ee0fa65d1c339ec60764d6d7151cc75525. 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/USQY51769502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f47dbaf79e146bbaae9528c414476be972f1a2a956cbb3bdef676bf098ebd3f. 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/USA2P1861980.
Applauded: Project Music, Vol. 2 (wish i was on the 405 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d791bf403c2551fd7a54afb8b25e9f8c0b31850e0ca1ef21bb713db8d05916a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USA2P2007076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f459774de8fcc51adde4978b7c6de2f22b49fceda11f167c9e7a9eba559c5. 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/USA2P2029475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c27bc06e7eb4bc52f9e91b075e79b2b067468ba212786f64b74a24a4ab661bd. 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/QZK6G2053426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9152a06844d24e96babb6ac618c5cdcc630dedabc259dffc4552251643d7e7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZMEN2013469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1656c96bb388b21da57d5875188d88afaa7ffe523b52074ffd77670d8d9167db. 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/GBEWA1909511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fbaf68c34975ab6878479bc99fef6f2987e232cb386d4f509c52ed1933f950. 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/GBEWA1902998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01f23f23254a7015f2a7967de37c361169decb1c38f4f51547c5996acba8614. 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/GBEWA1908710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f826a9ffd82836b54654435ada063514dcc20511676e9d0521bfeeafa46f97b. 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/GBEWA1908717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eabea19bb0960ba61ccfbc93322f77d85db3d432a8cf7714e55e34fbe9c3d5a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBEWA1904133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1c3c5437978c5b949380a9d0ccfffa77c6c58f78503e5717906da45c45d994. 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/GBEWA1905770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd949574e6c4c257ed1af190ed75f208fa463da497dd1a54ab7b391bfd5b50b32. 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/GBEWA1905771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b389d4830c3f2dd5b717e1a032c03af7ec850affb7448b91d1bb140b60f58be. 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/CAU112100635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d27e4356ab5c9d8119b840a3c556239bd367f6ef67e627426b8ee48bc50270. 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/GBSZF1500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3f1605c990887f9e02d8e049a46ab6016a1ad352d8ffe86f41db2ce7662db2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBEWA1908701.
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 0xb28843aea1cb939d846fb8709c685995fa6f59828b7a1e5bbf947edd20fbc56d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBWUL1953201.