Charlene Choi Tsoek-jin (; born 22 November 1982) is a Hong Kong and Canadian actress and singer. She is a member of Hong Kong pop duo Twins, along with Gillian Chung. IMDb. Biography for Charlene Cho
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 0x642084e38eaa0f999b4831380c577d42e391da9fc9d52ea1a3705c9b3f9b3984. 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/5a0dabd0-e7a0-4876-8316-d5968c323c6d.json and https://artists.proofprofile.net/proofs/artist/5a0dabd0-e7a0-4876-8316-d5968c323c6d.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 0x605865226bc7f7c53b414a8bf64588c3afd9d4895fddcd99b9d98bcb2df2561f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKD251700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bc20aa7e4a11ec37ad6e6fda41d416939045a2d4aca6b16df9828298f5d2b0. 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/TWB670805215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c556e5cb17b50be83c80d7f5745276e7cb02f65297de11e7c7cda0a9ea2278. 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/FRX762313460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59d571f0ebc0d85362cd2500a0fc9ef55472e3f199cdfe8a3d83a3bb69fb647. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX452321207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb099762fa4f5c6be745b07a7d37b5fe6129ce79874013ae6cdedfd351f7d5a20. 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/HKD251016911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2412d353f53a0cb653c014a291f701e94c36065482a45b0daebf0079780b07. 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/HKD250616811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cee3cd0899b85347e4cfcb53ab9ac69e22f29a52930705488c4284301326188. 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/HKD20532612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59400adea544fc3e39e0714b93e328d3ce7ab4c85926d873c5722a7c6d29fe96. 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/HKD251210105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c62b81dd74ee2cd0e00cd87848974b30502dfb82d92b75a45df55db227294f0. 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/HKD250733202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb484b6cb8b232e462ae4eed1009977276f9452f663533b310a41d78d412296. 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/HKD250719210.
英皇娛樂15週年和華麗有約澳門演唱會
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4936e2145b5ef9ae567da8c2f8ba4a98341c0cf3686b8ef4412eb4d7f379eb2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKD251512424.
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 0xc8dba1fcb664736beda473dc227aafd47e0c7261254e8e1219d3ff2524bddadd. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/HKD250915224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb32c96f1065242332fe75b515b66909c1131edb36deae0434cadfe7160254b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HKD251117701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff16c4eed7fffe3f51c6c96c74c3ff9817c571b257538b43ea95f2e661eddb4d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DGA052306442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a069dfb8252427121637f5746fd1363fd5d21c8ea3b8e176d66e7f01534ce. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/HKD251210101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686898f207137ea011cd6d3d094fcde94572d0d4c1dfef60b0b9a0f3940528c7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKD251017001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd821aeb4be5317188f4ad1f5f0d522978df47b09c00824fcec90c53251af2a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRX452340698.