Xue Zhiqian (, born July 17, 1983), also known as Joker Xue, is a Chinese singer, songwriter, and businessman. A leading figure in Mando-pop, he gained wide-spread popularity for his distinctive emoti
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 0x360746e93ec1056343e338ce5fc74c450bc60f2973005f92479552a21359731f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34cef0c2-c8cd-44f4-982b-6fe1abe92526.json and https://artists.proofprofile.net/proofs/artist/34cef0c2-c8cd-44f4-982b-6fe1abe92526.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 0xa4e07bab7c39be3e3e1cdc6b7d9a8a11bc97b1c5303bdb876062bbc1e5e188e3. 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/CNA651500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41ba1b3730ca9f403ee15f7a095f7469e0c77baa959a0774f580bfa7a72dd2b. 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/HKG732280464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6917dc51662708451368b22ed6f9efa07f3bea4d06845dea7978e95dae93bf. 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/HKJ962012539.
這麽久沒見（電視劇《你好檢察官》插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf705d89e29bfa6e9f1f757af1fadabb9478ca0587848a79d6ddc8b04977b6cca. 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/CNZ501900821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf956f4ffa9d97d3736df11ec2f6935d14f29e31fca6b51a88b086199d3344988. 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/FRX872149446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f29c41de4dad1b6cc8f7635dbcc874a5c73fcf923bbafc70a8891dfee39235. 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/HKG732280426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86b82a325b198965835f4e3f9940cf796dc500b2adb400f973420886196840f. 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/HKG732280430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf462c2d5e3ba4513260a653a0c98bbd080a4f2fa64c322948f3c10b0ab3c9fa. 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/QZJPM2481067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8db6f246d5f8e759318bd77a56aabb8662448e2b4d0b9f3d01527d4bc0484e4. 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/FR10S1987479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93542d6c51186406970812e209870961026efb6c6541f6aee4b0be60fd1d30a. 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/FRX452147776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc2d6f28bc4b745b77dd0f9dda7ccaa01d519c74e3d0ecbb35ab39a2e460605. 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/TWB532210003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d9eed7734aff79fd1c7a18ac0932882e982eb02e84f0d0477f2f28a7a3e5e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CNZ502201398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a212db21bc829a8be20214d7700b12f495a01b4839935473332fa271b2dd0ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CNZ502100521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4efb23c9a71d986461db8807c5dda095998995bcc7909e1fcaa63274626deb. 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/CNZ502201391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420965fda01e7c538510696c28cb9759334b8176640e389021d168d54f58f4bd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CNZ502201116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8abdd4b82c6f378a5de7eabf3204b87c2ddd865a11ec6b98f803b7cb86710c. 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/CNZ502200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96871df972c2eb8140f2220a8ee7c56dbf6b168a5ec5454d323b17e7fdef1aea. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR10S1989565.
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 0x5d3b64f48bdcbd262920c02d64fcfe8bbd65e56123df32dcc9d39887af7f718c. 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/CNZ502100982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e5dcb90f5409b2e49f428142452dc3e72b2ab89feb53e10c2f07bfd1bd86c. 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/CNZ502201396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00373a461d4cf329806b7b89f4e3a245bbc1b6f4b446d6380d20b286d5b1561. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CNZ502101005.