Zhou Xun (, born 18 October 1974) is a Chinese actress and singer. Regarded as one of the Four Dan Actresses of China, Zhou became the first Chinese actor to achieve the "Grand Slam" in 2009, winning
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 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 0x93e2bd0b88a7fa5f389640306e74d7b3eb330989fdb5e02e3789468503c782ec. 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/b2a31175-7293-4ffe-9c04-e5415e9ea685.json and https://artists.proofprofile.net/proofs/artist/b2a31175-7293-4ffe-9c04-e5415e9ea685.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 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 0x2d6ecede57693765728e274e7b2320e31f8173661f547810e0748bd7690b7bba. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/HKE670700325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277225ea53ea54bc16a6bd62dfe62816b7a2403f92cee819d145921360429f86. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/HKE670700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7461384b821cf7b2b6c6c1867aacb6f484ae3ed073e25f835f09088dbe9f70. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/HKE670700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fae1b598cc0b45b1c473d7e34b57137ab059c035142339d6a4ded2650039a40. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HKE670700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b0f40e3ce3b647a9ed41623fb14862de86a6cb0b062d7e40b37043de33770a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKE670700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272fddcf7a8093fc42fcee8ce783e1ea339305290eb5dff03f6dd2a384cae77a. 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/HKE670700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8364821560a3eb8f263001411deb4db493f485d7e4e0da6ef13fba9dab2b0cdc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/HKE670700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf135239a7b1086214f1a99ac272da025f66280ead15ff6b883147dc279a475ea. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/HKE670700298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a87631c7771b4364d7a85b3b8a80e4961b1cee8ee2f749cedb37ba456bc0e9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKE670700283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f26216a45776e5c339d21e6a1b8668c0268286f6fac95fbce85c88282e491f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKE670700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee44a3feeff1abf5d8edf6b2d59239d5e13d6d597298d805177ad7630b719708. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/HKE670700295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b2595df1d158a62262559bd8f146b08d25b101dfb74228ae3bd8f57abc0403. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/HKE670700274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61751183217baa1021d8160af5f0c3ca0d5add9f62ff0a93f81ce2486a60341e. 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/HKE460612003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dd93b6b2476e9924c5e2269273241e751a13d8f71bae34e8063f85c07c97fa. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CNZ792100576.