Saija Varjus (born 30 January 1965 in Parkano) is a Finnish popular musician. She was chosen the "Tango Queen" 1996 in the Tangomarkkinat festival in Seinäjoki. This was her second attempt: she had co
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 0xc16d5d94fcb8472f1c7a06956c0d968306c67cac7537cd7c83a82c12c303197e. 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/a27a7442-db51-4e4f-b767-e3446ba952a3.json and https://artists.proofprofile.net/proofs/artist/a27a7442-db51-4e4f-b767-e3446ba952a3.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 0xba0ece5340d8e484bb29112a814294d74eecbde08bad8d86b229243868853ed5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIMTA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0bf9761aacc5fbd1cec890ba8dc45cc9644095f5e13f7ad21a1db5113e377. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:00:39Z), 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/FIMTA0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca28128986bef5203c6c6e2a433d19dde4fb8f92aadf00bb90604a1c3a28bf8f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIMTA9800103.
Kultaiset häävalssit - 26 toivotuinta valssia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b81fc829da0bd68263d2725c538cfbf4cf3ec5435333fab081dc4b813d9463. 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/FIMTA0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014fc23ef27ec4dc139bf2ffdc766a65ee5ad65aa4084fb5bb5c467d0544e8f0. 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/FIMTA0000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd0b885a00a8fe86044b10f43f491f98ae77bd947e4c6221e1e9be2f3f2706b. 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/FIMTA0000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0f5aa28c989f942831b7eb017610832058555f16304b54bb471fcc85c40cd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIMTA9800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a19a9828033e8a89dcb800b9a59e592f0f65151f878252a1bc4b929ff5274c0. 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/FIMTA9700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1a8e1338698938001eb98508bae35e9545ed79cdbd207a0fd065d3423a59fa. 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/FIMGM0300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d949bc563156fff15610018c2ddd4eb7e403d6fabd04a839ccb8f01531105e. 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/FIMGM0300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88121592376178957c861274155d7c5b333f082ce2e906278474307a466aa3c0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIMGM0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b04f9055e3e93dda16427e7174c086a328899c38401122db911996cc4ba465f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIMGM0300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e40038891ee82e003d7738f1ceb3a3654f9345d10c08fa837ae7c3279d0cb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIMTA9700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f74f9b3fe403e9d5aaa9358a37b669e852c9c01f137e92c48c86cc66d9d12. 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/FIMTA9700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1432e4b555c65c1229b4a59a7a524f00eb015f78ee12f0f7db25e866a01ce9e8. 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/FIMTA9800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082de6562ef0f2bcabdd9b1790134b1da44ce1c9670ed234df15a5dd9b732bc5. 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/FIBMB9800018.