Tasavallan Presidentti (in English President of the Republic) is a Finnish progressive rock band. It was founded in 1969 by guitarist Jukka Tolonen and drummer Vesa Aaltonen. Other founder members wer
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 0x22823cdf33aa70ce79e98f5589c44b945eb298cdbda4ecb4372f5320d5b0b21f. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e35727a-0960-4a53-8d0c-cbf7803bffdf.json and https://artists.proofprofile.net/proofs/artist/7e35727a-0960-4a53-8d0c-cbf7803bffdf.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 0xe7bad3833c2fff86aaa2b811f19df939e90817babe6d8288a643182152e2090e. 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/FIEFE7100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eccf40f01d1ebbdd272a7a6c2d20bec2e618b1c970fc641be6e8e886f328ae. 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/QMDA61826487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a762fe61aa080e4a3192823f2e323faafd3505f1fc3d16075e640d92832a2d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FISBA6902004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27809a0186327b6156284623b810bb34b0cc904be210b4e08f6b4aa3d36b633. 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/FISBA6902008.
Pop-Liisa 1 - Live at Liisankatu Studios, Helsinki, September 12th 1973
Changing Times and Movements - Live in Finland and Sweden 1970-1971