Arja Koriseva (born 21 April 1965) is a Finnish singer. She first came to fame as a tango singer; her repertoire now includes evergreen, pop, musical theatre, and sacred music. Koriseva has sold over
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 0x26671221b5b99adb6b9f772c11d7dd621afb91bc2197fd3b0e5ff7e76025d179. 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/cf826193-592b-44ce-96fe-a72e61e3781b.json and https://artists.proofprofile.net/proofs/artist/cf826193-592b-44ce-96fe-a72e61e3781b.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 0x442f00ce092105a34fdf85024d6a645905dba9bb67bdac2800b649a85f392684. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FIFMF9001000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0a1b62adeccc062c068ab83dea014897e9ef29601c04ab50c29814688752c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FIFMF9100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ea58de3f621a8858041498cdfdc0d96e7eca067a8b8ffa06a1c0bbe9186766. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FIFMF9100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa063fb64942351060de7aa3394080211505f800b86a007642d1ec6202121611b. 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/FIFMF9400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb97b1452702175c22e94a1335b44f1baef636fb277df54b0d45b2918d47eac8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FISMC9500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea46d30720c708afc9c82be75da97bc5d2eabeb21c80c1f041e66c66865d02f1. 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/FISMC9600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442f00ce092105a34fdf85024d6a645905dba9bb67bdac2800b649a85f392684. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FIFMF9001000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20bc8225fecd5006e73cef10d952195439b2f1bff956dc419cf8ff4ead48547. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FIBAR1600435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce57d3215361b2f55c2734cfbb9758c7ee88e6c4921325e9939b12d331b3d336. 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/FIAX21900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89626ca9481387c53b94bf557857c693d489ba5ca6608b19557a3c732e10e703. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FIK3E2000377.
En luovu susta koskaan (Vain elämää kausi 11)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ec0a7594c4387a4b84eb6cb0ce6618827f6cecb43460aa6c84c6bdc2ba600e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FIK3E2000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926cb694bce74759455de6baaa8a3a545d6970910d930a1faffc309cf955dbc9. 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/FIK3E2000382.
Lupasit et kelpaan näin (Vain elämää kausi 11)
Suomalainen tarina (Vain elämää kausi 11)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ffc1d55288e8d9c108fd1e401036f7dc45b2a5622f40f4db8fc93bd50cadec. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/FIK3E2000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205225995413e1074bb1658e774bc320ba0b4e2706627e47863ea1e6b2778b06. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/FIK3E2000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16fe374b02f42f6ddf73b7832c3f3452af26b9f900de6e8cfdd75947d1ee22. 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/FIK3E2000406.
Arja Koriseva & Guardia Nueva 30- vuotta Juhlakonsertti (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c42bd13d483612e72a866e748805c32e926c1d32870bcb27dc4a9c331b4c15b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/SE59D2223001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfc924ef1335a9a4431b2cff9820fb4c44fe051484aa38fdf7e94c3ee7deae1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJM2598895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db9813af88880c6dc47e1da03e276a6f2ce7e21914e3fb87bd8bf4a1bc8c1ed. 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/FIFMF9000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442f00ce092105a34fdf85024d6a645905dba9bb67bdac2800b649a85f392684. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FIFMF9001000.
Tähtisarja - 30 Suosikkia / Suuret suomalaiset tangot vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442f00ce092105a34fdf85024d6a645905dba9bb67bdac2800b649a85f392684. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIFMF9001000.
Tähtisarja - 30 Suosikkia / Joulupuu on rakennettu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d947571c2690de450447bac4d8b0f30c067d07611b1f9cdc1335c148155ba5. 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/FIFMF9100009.