Baek Ye-rin (; born June 26, 1997), anglicized as Yerin Baek, is a South Korean singer-songwriter. A former member of South Korean duo 15&, she debuted as a solo artist with her extended play, Frank,
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 0xc59f0cf10e8ec8d80f45212e7a221dcc2bfbeba126f928371ed4b9e7885b999b. 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/b77532d4-4483-43aa-b17b-07a13aa27632.json and https://artists.proofprofile.net/proofs/artist/b77532d4-4483-43aa-b17b-07a13aa27632.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Crash Landing on You (Original Television Soundtrack), Pt. 4
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 0x8065ae307286535356429995ed8d140f8de69e53035266c07d8e193bcd568d4b. 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/KRC712300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bb6e6377066a21e99f3bffd199ee3347090687de162f6001957560b8f4bb45. 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/KRC712300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8065ae307286535356429995ed8d140f8de69e53035266c07d8e193bcd568d4b. 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/KRC712300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3daf6b0c65813fc788905624e17ffae09cdcb3a95f3e1e6a5be12e46f3f190. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRUM71700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3daf6b0c65813fc788905624e17ffae09cdcb3a95f3e1e6a5be12e46f3f190. 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/KRUM71700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16de65c231454d2c5f9ae792ea9a50eda478e2a370db0219dac32278de592874. 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/KRC712000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16de65c231454d2c5f9ae792ea9a50eda478e2a370db0219dac32278de592874. 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/KRC712000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e321b864763f746f1cabb8308f1170a0220a9594de085ec191dce3be0bf044. 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/KRNAR2352424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b9aaebb0114d63ef65ee6cf8d31267222e8d1677c6b4946e04b850ffcaba6b. 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/KRA111500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b61ea1988bff96c5bba36ffb2c9e2a4949dc07024b2f15391292e2b2a60fd77. 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/KRA252002114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e65542c0ee3af212cc2b6b093a30092538f97ccbd8ec36352512b0751e12e. 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/KRA491500165.
More than K-Pop: Korean Indie & Soft Pop
Crash Landing on You (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865b5bef7de668f18d7d72dda5eb2ab2ff193c01dbfb103b73cd5657f2ecbda8. 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/KRA492000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1946c2e237d88840d05dae44093b70b1dd49e1361c3a6fc9666f7178a0e2f4c5. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/US5TA1400122.
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