Erika Susanna Vikman (; born 20 February 1993) is a Finnish singer and songwriter. Beginning her career as a Finnish tango singer, Vikman first received recognition after winning Tangomarkkinat in 201
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 0x97d85982d5a8820fe84a356d8d300b0759d0a76ea06706554bdac2ebd793c003. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fcb83c2-728b-4787-81a5-90746b84db8f.json and https://artists.proofprofile.net/proofs/artist/0fcb83c2-728b-4787-81a5-90746b84db8f.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 0xb13af73f6bc044e48aa730aa7322e79a3301ae579b6c9de446ad234e4adb689e. 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/FIMGM1500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda677480e5fb5b684bb78fcbc4b0c28d4c055d48ef709dd8e9ca58539d4d7e1c. 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/FIBAR1700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa488bce0793683f8a6a1119a8b375e777d4595470ac081ec5b339fcb76409827. 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/FIWM42000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc432a957a51e23b030545ae6bf1ea4e3900dd393528524160ef8bea3313b0fdb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FIWMA2100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b4e6a0f8b834978410c7bd9e4ced39191448a27644b3509189a01381d6e4b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:48:36Z), 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/FIWMA2100185.
Ihmisen ikävä toisen luo (Vain elämää kausi 13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925a1467ef5ce5e2d7f258797fb2e4b9679c73df0b5ce0743984736d192a6164. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:16Z), 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/FIWM42200084.
Loimaa (Kickstart) [Vain elämää kausi 13]
Maailmanlopun reunalla (Dance D’Amour) [Vain elämää kausi 13]
Kova duuni on rahaa (Vain elämää kausi 13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb9a9c10ae6ce9e4f0199444d0e3f540556a4c56c71c60e5dcf4de1e662bffa. 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/FIWMA2200446.
En etsi valtaa loistoa (Vain elämää kausi 13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479816723a826414622dc4628f94be8e6a14df9cd9e2373851d08d308a7752d9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIWMA2200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a56e24a5d5a2b91f6617f10f71de8a7cbcdcb1f9a9b2cebbc3f3392e0fa191. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FIWM42400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3226ec26652df714afcf0fd86ffb3ed472cffac613f96759c001c77de4e026b. 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/FIWMA2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3226ec26652df714afcf0fd86ffb3ed472cffac613f96759c001c77de4e026b. 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/FIWMA2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3226ec26652df714afcf0fd86ffb3ed472cffac613f96759c001c77de4e026b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FIWMA2400024.
ICH KOMME - Eurovision 2025 - Finland / Karaoke
Eurovision Song Contest Basel 2025 (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6fe0a253ef24e56195096a08d71e31b3c5e51755fd319a656a3d7f23ea4651. 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/DK2DY2500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7ac67fd4cc02ee1e5118929ab2d14486198bec0c777c0ad26a7c5d26082208. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FITH11600087.
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