Jeon So-yeon (; born August 26, 1998), known mononymously as Soyeon, is a South Korean rapper and record producer, under Cube Entertainment. She first gained attention for competing in the television
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 0x7da927bd0bc261eecf7947e06f08bb7c70f41196c4d8c550d116e3671cbf72e7. 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/935342d9-c741-430d-999e-4938ae438adf.json and https://artists.proofprofile.net/proofs/artist/935342d9-c741-430d-999e-4938ae438adf.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 0x09596e492438b384d3eff181db5c5cd4408f0ee50426f77b090973c7e0a878fa. 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/KRA301800403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07132edf2221ccde529c287954facf692c5364e65d4ab8e9125f3e045ca690a. 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/KRA301800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda66f53351fbd9bd5bef8f40eca996e4ab81de62adaaca6935320334619b087. 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/KRA391800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9befddfaf4ce86f22d57cbdd83b458d3e8125b82710dac1eda355da4f49670. 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/QZH6S1900251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cabe51d4552c795f591a554c2445a9392cd06dc8f9dbff0ad63122bca45b43. 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/KRA382321669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3048987e698788ce7619db844280c63787e876d0d85fca7d4c4ff8c2625d82f7. 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/KRC712200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc542f6a72fb6bdf4317d78ffdcfbbef5688d4c9c682179684157baa10186261a. 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/KSA002101009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cce433a69862b48e777577d33ef8864786be0fd8ebbe32e06e9b3a7697745. 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/KRA391800069.
UNPRETTY RAPSTAR 3 First Show X SEMI FINAL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb3023dd6332f1d6eda90b6eb854bbe2f95733a77466db71e8b6e4d7750056d. 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/KRA491600595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328fb70f00de75dccc9be7f528f9564d0d0ba9f5e6d4c81c5dce9fdbc43d293. 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/KRA491600731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c242311565a11b2b9ad43bef19a66bd0c223687fe0d23d7d8a7078f45ce871c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA491600738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627ea818ed367d50da19a21920312c173a7246ced6d436543d8d17f2ac452ece. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA491600743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d13dcfc5f38c1e35a4eefd128ad046a955f112859003abafa23be4fdbfbf21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA301900120.