, also known as Tik N' Tak, was a Finnish music group consisting of six musicians from northern Helsinki. The band was formed in Pohjois-Helsingin Bändikoulu (Northern Helsinki Band School) and signed
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 0x91b6d522e9007dab18b5f6cb49354b511a682b47ad80819b7b2db5dfbac46757. 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/2b3475c1-2999-4954-801b-e8d0997abb2a.json and https://artists.proofprofile.net/proofs/artist/2b3475c1-2999-4954-801b-e8d0997abb2a.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 0x4c3f92cc42ec137c67232c2eb8b9ab57838161d5f820e4492ef04e3cc86c0f14. 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/FIPFP9900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3083275c397a1bdb9b23018ee6d34e1847d0492893503f7850b9795ff3d5dddc. 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/FIPFP9900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca643a4d6709a8c6c057c964255e811e86d338b5f2c2c6d56f1353098cdd328. 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/FIPFP9900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c17524f508dfaa18c01e297428224905700af1bb7979e257961ba81b2f56b8. 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/FIPFP9900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4db4d571b49fe98869c5606d4e4ebebc74271941d1a8bde4cb79e8faec3c907. 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/FIPFP9900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e35c3e5233dc78d5be55293c3a73d04f83d2192664b3e1245c9212146a06cfd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FIPFP0100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272e0ee0afe06c6c1dcddfb6c69c0e46813a1af06c0b0460bcf752e8b3d3af5b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:26Z), 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/FIPFP0100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca3aa8f85930547c7bd89b0ef5e461be66b75b6d90dd965f9d4539409185a99. 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/FIPFP0100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f53643122101fca165734a0baa3d887b16182043041949efd48f82347fea58. 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/FIPFP0100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89812a142dd69a1d1917ddbe25c2f8e54b3e06362ed8623f210df91ce393ab07. 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/FIPFP0100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabf61675b49d0eaec62412f797de7052bead1f177f02ac15c0f99e9ebfe2732. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FIPFP0300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec3704c99d4492444f6b338d8aa568605333ac90cf1f718da92ba6f62a25977. 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/FIUM70500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08e6a9fa53e32aea861918fe062686442d7af37c4b191a79268080da5c8ab97. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FIUM70700713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7ebad9fc47041ff17a6810517b1de99aa1e2f303160738efe0c10119f2e15a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/FIPFP0100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8ddbf68e7b8bb4b47a64631c8de550496135e9812647c27d577289edd7a8b9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FIPFP0300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a657e579be3dca309a8a865c0867f0a9e6432417af79cdd9c38be9f34ce348. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:49:20Z), 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/FIPFP0300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e821148fce24a47451abae32384729e98a68046ecfcc6494f96049c9cc15f6. 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/FIUM70500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabf61675b49d0eaec62412f797de7052bead1f177f02ac15c0f99e9ebfe2732. 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/FIPFP0300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e821148fce24a47451abae32384729e98a68046ecfcc6494f96049c9cc15f6. 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/FIUM70500050.
Henki kulkee; Virsiä ja hengellisiä lauluja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bac07f334606e578e11a9939e3ef44057cb68cc2fc8b8011b6927cfed13d085. 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/FIPFP0100202.