Tuomas Kauhanen (born 1985 in Porvoo, Finland) is a Finnish rapper based in Helsinki. Career Kauhanen started his career in the early 2000s in Näkökulma. The band released their album Tulikaste 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 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 0x5d63f6ffc6ceb34873497847e0ac7c7fd8d5d8b269d4e58583952f9b5ad07a2b. 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/36b2f884-227c-4641-b276-9e9cac3cba04.json and https://artists.proofprofile.net/proofs/artist/36b2f884-227c-4641-b276-9e9cac3cba04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miksi naiset rakastuu renttuihin? - Remix
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 0x89df85b850692139e59ca9ac8c93b174660474295b4826f2d30a848afd499ab4. 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/FIWMA1200197.
Miksi naiset rakastuu renttuihin? (feat. Mikko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa040a8eb40619f237df56ec7d502ead732ca329858d79e2ad05289252e3fec32. 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/FIWMA1200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eb800e40871d9fdcdbca4de5a8d5223b72bc3e4d79ebc636a9c6efa8b30900. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIWMA1200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812d23837048b6b0f3616ca13fe48e0ffbde7be7fe8dfcbadb2e4b4eba464cae. 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/FIWMA1200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2654d69a016002491aeb9ce2ef39114728ebd02a6891da39ceddbeab3c6a58. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FIWMA1500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf357abd4c2b8414fcb835979a97ece3200aaee82f3127ddd9c06ad9d0516339e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FIWMA1300681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefcd685e4c145ec0fb5801140321d8bc4600de22a560994ea653868b1a9f1f4. 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/FIUM71600729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15f024b700579194d20e4f2646ed204627b76deca980ccfa37ee4c7be1055ed. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FIUM71700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995946de984e04e8b4feb7e88b51d6196a00839ba3274ab6cff019448425e85c. 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/FIUM71800271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a659f01420743f14e39490e9ffd96049d282652c7dbb2fa74c55a70536551e. 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/FIUM71800491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7beb5806d3cfd80c7c7825d9431cbb5da2f8dab6010aaf3b6842900351882fe. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FIUM71900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb56fbae96566040fdcfb3a80bfeb35e9ac4bb5dd05efa1a86342d0f093a1ed2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FIUM71900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7beb5806d3cfd80c7c7825d9431cbb5da2f8dab6010aaf3b6842900351882fe. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FIUM71900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6693ff5f1febca972603480f074bc065ffa0fdc367050882fed0fbd62f9f39f. 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/FIBAR1900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8933d31c77cd5c0ee19ed53da6506883598b778e65476e04c682db199a7f274. 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/FIBAR2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470ded8674772bc75d93f4d848beb0ff07570fc65db8cafa69f64706fb2fff77. 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/FIBAR2100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6693ff5f1febca972603480f074bc065ffa0fdc367050882fed0fbd62f9f39f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FIBAR1900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7fc539a120928b36ba856c9bbfdd14870723f8b98f2a2d204a64225b9e96d0. 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/FIBAR2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc41acd7fa17b8590ed8f66651de32cd1bcdcd4b178fb9a51d80ef1242f9392. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FIBAR2300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d034cd1baf707c3d85db8643bdeacb0dba0fe6d5ba7205eb473d7b6331071f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FIBAR1400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519807de3c810c6a89d2193a8b354ab9e67d4c781ccbb1522c41d3ab33004156. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/FI5RR1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3284d723b9a0e2fcbc1a0261baecb45b674a8034c59c24b6548697f4f58f6e8. 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/FIJ7H1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6e8507452877926e3e352d2df9171b41b299313cb613d3af97f8a552baf20e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIMMP1500001.