Lexie Liu, also known as Liu Boxin (; born December 21, 1998), is a Chinese singer, rapper and songwriter. In 2015, she participated in K-pop Star 5, a South Korean reality TV competition series where
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 0x3363f66249316cd6b6ef452663ec358e65f27df85e68f1767bf866fabc9506fc. 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/d338b0b0-5f6a-4755-a156-30c8f5c4f721.json and https://artists.proofprofile.net/proofs/artist/d338b0b0-5f6a-4755-a156-30c8f5c4f721.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 0x8940ac94fdcd58ed26315ed58c655e6a6ddb35479ea6cb93aefe5207a455bd5c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TWAE31802215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f02ce8ce23473967f452fca53efeeaa4c5242347a9d392e6a83749f040fdd4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TWAE31801341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee443f2ea311a830a52ff537733456c7b5130bd218b4d47ab71560fbd8cfabbd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TWAE31802270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bb4a4a8ae72e898254a269eee81e6970f6a3acf42350fdb896cc524de705f1. 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/TWAE31802272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb2907343ea88f4629f62fc6c3e0beabb42c13f761a365780cbd09d5aa77e70. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWAE31802273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94b254c6faa93b2b54828cdef802553810e97ff9e00e8a1d6db736c31a3fbdc. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:05:26Z), 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/ZZOPM1800784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59125871d454209971bceeedcd9c2022599a12614617f3254852cc1cf1eb9ce4. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ZZOPM1900856.
白鷺思一騁（大型紀錄片《紫禁城》主題歌）
白鷺思一騁（大型紀錄片《紫禁城》主題歌）（伴奏）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b539161183eaec964caa08bdeeacb6e5810de2ed3477b23bade8e00fef7957. 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/CNZ512100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e80f494660ed1f3343afecb72f92c133730c584803e5503c0b37869cf5d620c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US23A1595662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c41241fbfc6660a3887dc6bf057c59ac5ec1dc64d9297289a33ce2d985d6722. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:25Z), 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/US23A8581433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c284b561dc5cf43d86ba0b864beabc5fec668fb7a1d0140bd33d062eaadd307. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CNZ852315134.
妳在哪裡 (WYA) Remix (Feat. pH-1, Lexie Liu, ØZI, Masiwei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25625b38ac670c5b2427246b53293ede57b7d81c42be5f6f9b1c345eec4e8342. 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/KRNAR2307966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82db7b6fe4a22da1b0f21624610b5f5ee39329b9888ab6444d248e9d71ca70. 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/QZH6S1900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7e9c920728b8a692d6b32cc8792eecded74a0ac86335328dfd8fcfd6a4f71. 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/KRA392400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2a1c29f025d8bd420f06f4c596bd8ae5f287b4c779d8b1683064ead8f61af. 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/HKG732431248.
大型紀錄片《紫禁城》主題歌音樂專輯
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095694253ea3b1860cd206e630e4f218dfb46e18de103790cf7c9ba39c214f11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ512100474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82db7b6fe4a22da1b0f21624610b5f5ee39329b9888ab6444d248e9d71ca70. 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/QZH6S1900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e5308fa2b01a0e3edb1d504436c99e1295d2ca806ca48572a778d66ca7a77e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/HKG732431252.
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