Johanna Kurkela (born 25 April 1985) is a Finnish singer. Her first published work was a duet Tahdon tanssia kanssasi with Tomi Metsäketo in 2004. Kurkela released her first album Hetki hiljaa in 2005
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 0x3a94ef338b1685eeb2ce3d141701a1e0d993b0c40a74a3beb30a9db545124680. 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/13836a16-632c-4414-a390-affaa0c6a4e0.json and https://artists.proofprofile.net/proofs/artist/13836a16-632c-4414-a390-affaa0c6a4e0.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 0xce418d0d97de2af156f4cc848575c43d0111ae331e3c0dbb0a5e9f713532ef9a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIWMA0500494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356124da0e6269bffb80613284ea2ff7c9d1b802a5636c9760e8a851498c78a5. 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/FIWMA0500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebadc68e50e0e796c7ecf47ea05b6a017100862fdec98ee32d6519fab83c0474. 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/FIWMA0700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832d45be80b161d7db5217ea01b00d9377cc42a459fea9272a5fe9e2339679bb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:00:29Z), 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/FIWMA0700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc22a8fcdd05165fdaf00dcadfeab40898631e1fdab226a6ae61f9d43497305c. 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/FIWMA0700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b335cf48c102195f8fe56baa30610056eb395a46eb9a2805305eb8ac998b06. 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/FIWMA0800881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dbb7067d3639c500ea6748a93724e5bef3dfe3bed4159727520af3c9750959. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:24Z), 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/FIWMA1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6890581e242ed18c2f9918157ff029c795d7fced952682edfd5c62bdcfdebe6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:32Z), 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/FIWMA1000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92f0a90f74f3aaf4f8d6aa3f6603a1b0670c1d0bbb6baeb4f822596ccfcef28. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:36:02Z), 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/FIWMA1000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35449d5b3c790dea92b88f29a14d8532ed9a04bab893d4b8a0bfd022567676c. 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/FIWMA1000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3796b16d5bee829798e6fe65b88117e604dd6ffa01754d7f66eb4489cae78f8e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:06:40Z), 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/FIWMA1000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd785d1f63e1ca6a1220a06971300cf97db630c1d0f185724fe7acc49d630cdc7. 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/FIWMA1000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb400d1906b4d5ef0b1a49f480b5935379b444c46ef369222460142d487c16bf8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:21Z), 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/FIWMA1000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac3ac1325227a4ecf938f9c410bf8535ec9b4f422b414583abf100f843ae0a8. 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/FIWMA0800723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d155d51b01c156d249ca411bf84ed6a375b7d4949ec985bf94d5fa4f58a004. 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/FIK3E1200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6351ace85fa46cae6d8355929390e8fc6420c189b84d3b3fb241ee120cb755ef. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:00Z), 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/FIK3E1200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d155d51b01c156d249ca411bf84ed6a375b7d4949ec985bf94d5fa4f58a004. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIK3E1200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d09b5f35fac2c841c779caf1479feaa43aa971ba5e250614ffd48f9142055f. 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/FIK3E1200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654bf00569f9136049570f6eebb23bd4a73c21c6e9d2fe8695f4e1e96ad6d4c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:12Z), 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/FIK3E1200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe880b4d9031b0aac8f5e055681fceb89aa89a0b21766b2ce1002c68e8770fd0d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/FIK3E1200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1077ba28892e642eaf035275e5a6a2cce2c147286ebbef2bd6d422ec70b25bd7. 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/FIK3E1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93719453f768be8de98fe1cf4f61d4806175ebc3fbc65b652a84a8b85bcc7d7a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIK3E1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8baa3098e48e278394bb5dc1fd99c6439c9d095147817ec11f7fd9b493353e. 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/FIK3E1300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8c5e5119bb36e0abc97e0cc114a2b2a90256d80a52c1d46931731b7e2ac40. 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/FIK3E1300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd5b1d9c22673a8d17780433f06bd86fb84bb61ca1799508019c1b0c92f6b45. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FIK3E1500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb11d9367a9f4a2f456d2fbca05c4d2dcbc52baf0914d75443cec98bda99519b. 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/FIK3E1500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ae5d411c02c7954e9eecc1980d3558532caa72a14c36721771d4b36213d850. 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/FIK3E1400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f4b5a79070403ed9a8d5084fda706523d6398e3d47e5713e8f78ff53ec5f88. 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/GBDHC2337103.
Nothing Else Matters (feat. Johanna Kurkela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16763bc9cade3b5fe67e681014b66c210424c484bff5b0ce34923ccfdb8a0224. 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/FIWMA0900628.
Mestaria kunnioittaen - tribuutti Tapio Rautavaaralle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac3ac1325227a4ecf938f9c410bf8535ec9b4f422b414583abf100f843ae0a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIWMA0800723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce50327d66c0f23ca78fd00f05252af7c7dffcd2c6ba130a127564d2ad26df6d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIWMA0900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac7bcf378bbbcc298060ea1c3a9c2fa4e656dbc573176e6313c5794be46f2b. 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/FIWMA0500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac7bcf378bbbcc298060ea1c3a9c2fa4e656dbc573176e6313c5794be46f2b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIWMA0500413.