Ruoska (Finnish for "whip") is a Finnish metal band from the Juva municipality. History Ruoska was formed in 2002 with some of the same members from the comedy rock band Natsipaska. They released t
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 0xd67350307ce5dd93d69fc6c2ca26956b4729c213874605cffcbc4868d9f5c7b5. 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/2a4e42e5-4da6-4450-93f0-a869e6ad8abf.json and https://artists.proofprofile.net/proofs/artist/2a4e42e5-4da6-4450-93f0-a869e6ad8abf.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 0xddd279270fed8041c8e5f4aa4bc56e8ffbea1fb48ed51d7e9029a346c7163f0c. 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/FIKRA0200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bbff1a4208d456965129ece5ebe5b1e1e614cb6e14180960c6c0245837d17c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/FIKRA0200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e36c1174d99d27b4c3aac1c6d8d63f791587bff27859435c89da38fc406015. 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/FIKRA0200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf052b665744d93ffd93b999d97bb0b88e2a5ef7438563ce7270ce1812f618c87. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FIKRA0200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925646d89fa94c86a280516611e9cbdc0aa8c74f64cd5705f8b84d0e02d091a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FIKRA0300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e4ac9a26ba27b3eea36cd089544bd022cb7875f49caf7009e8631d60fb27f1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FIKRA0300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e91b7fef5ac813876d60c16b48007cf2ded01e55db68271ed6f19993ea964e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FIKRA0300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8147102716ea69ee91a77b4bb35560e08c45ce96507c189cd2ade44693fa1abe. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FIKRA0300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5575f7d6326ca783515089d2f0d93570db4dc3f44ffe571b24b1791270c33237. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FIKRA0300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224ccb91384775566eaaff771acfaa455e2745af77193135c0068a2f34fc6f64. 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/FIKRA0300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df6111f681bbf38867915cb1007ef74a1803cd5554b5254372f7339b4355137. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FIKRA0300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8c0f788bc43c946fb21f773793ec10426b482aeae91350e2c54ceb615e0651. 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/FIKRA0300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860862b6d17c6a9b8a38537e8fa251e26bbd36582a87389ca5851fd3e63e548a. 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/FIKRA0300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e8aba22b00537cfeb375e33cfb4a964786c0ad57324a981dfc56daf52c8ee. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FIKRA0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108885dc9efa72e42d5b6c877b0abb5caa30c4eac7f012a3a4d7b87b05d61851. 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/FIKRA0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd792d8273bc0ce099dfa29e66e2f7186bb76da1403b90630d8a0c572a17e1364. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FIKRA0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cd2774cf850a2fad270891673be443f53082fd9d3c24a55c97887fb87f0ae5. 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/FIKRA0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a47a20bf07b54538b9954dedb338eb83d1956bb1234f873dfccb70a38977093. 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/FIKRA0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26f687ef988b3316e93627eb6fa73169a7ab7c60de3b85feb83844403838595. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FIEFH0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde79150718bd48b81b157cfc04d7d79bd89793259926f794e29920969b90c79e. 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/FIEFH0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2a9293daea0474636d6d847f8f0f00732209627c9d4e313ca56897a5080a57. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FIEFH0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27de0654bb5cc6408a38fd4d3961c77aa74351e433a31840d8d257f6a5433cb1. 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/FIEFH0600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d68b07d70d808e351a7f5a95c7806672e004aa530580b931fcd647c1f80114. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FIEFE0700748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3991ae008a92f3dbddab04d7203fd91aa366228c349b9d2999518d4647bf9503. 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/FIEFE0700751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c60b1baca407e8a737ec8b54fb8809d373f37791eb7744cc4258a310ef2af7. 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/FIEFE0700752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b75bbdff76e4135920266ca9452a882cac05c004204cef036c598fa8ea88ec7. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FIEFE0700753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc293b4d5b20c91681fa13414905299299440ab490645b1e99dcec7de23648935. 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/FIEFE0700756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974ea2e8b72fd18614f7cb1b8f7940fd44b2d0be68f592748497a3d5d2b92f2e. 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/FIKRA0300062.