Dou Jingtong (born 3 January 1997), also known as Leah Dou, is a Chinese singer-songwriter and actress. She is the daughter of Chinese singer Dou Wei and Hong Kong singer Faye Wong. Music career Dou
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 0x20a768147ac1f189a488476a7b668be8bf5f09fdb3d2dca1a1d2a05aeb275c04. 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/484bf129-1b0d-4842-b1d7-8edf71f98bfd.json and https://artists.proofprofile.net/proofs/artist/484bf129-1b0d-4842-b1d7-8edf71f98bfd.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 0x804f73ae0e6723b1a50ed879ac74499771378a6f6a6d0a4429226cad38399825. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HKD981601041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c14794b59a86a10acef1553c27e1a9e82386ee83c307014d1e855e3ba97979. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HKD981601101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3562f747e3912e0e9220bec5c8b073dbba4627c8929305a7d19e9e99744ecdc9. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/HKD981705041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf94f93cc829018b1a73b3d5339f85a10fb4071c7968fea27430789c098098f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HKD981705061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9245b1824195ef0878ef84d542a2beed702f46ac8f46d7dd7065ba120b30b81. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/HKD981705091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2b930e1cead5ff899b5ee486946590befe7d530f896f47a1778bd22e79914. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/HKD981705101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd0543a5e7c04359e16f24a74f6fc87fff8d7d5af412651b2103a3feed82e88. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/HKD981705111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362636a8d0cfaa6db9e46292b4a2a06cee2e962e826f5420e7ac4eca24667ac8. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/HKD981804011.
Long Day's Journey Into Night (電影《地球最後的夜晚》宣傳曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabd5a69850c1440ed005de0a4bc466ec0932580803267a354671052dc9be0c6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/HKD982001011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5424d2f0488cd538b4efc23b63dc4184c42d3a4904fd283677995565c9295bf2. 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/HKD982007011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeca3f3cf469008d1dba757e7fe48a2bf24aa7f3d61b56adb9539e511164964. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HKD982009011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2827f0658ec70cd4277f288e28180835c569180f43d12abecad470037bfc1de2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HKD982010011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362636a8d0cfaa6db9e46292b4a2a06cee2e962e826f5420e7ac4eca24667ac8. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/HKD981804011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9509bf5da7ddfc19e87699eaa089a95c164be4da894f18ac1fb2f23c6a3ff18. 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/HKD981805011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfda49b5152a7a064c1d1946fe6ed4509254d0af20155c0cb9c9a0f9d6446fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HKD982011011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29505738fd07e4c6f334d40b05c8167829eb2dc5a099b364c38f87ca1d808c9. 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/HKD982302011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3798b4cfa68f94fb7825da1a782d54a0f4281010a8fd9014eb0f9d5a44d4fc1f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HKD982402011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16528a33641093150ca0d3b841e4d39cf6a007c0e02678f03cf19750879bd38. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/KSA002502100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d048ab5efdc9ee5ebe8736033d95bf34dc8e24b0723cff3374b3c0f8ba82956. 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/TWJ012303203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba955290a4ee42ccc73dc6f67c6cfc26385c9f6d8731f1c8de395c6fd027b61. 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/DGA0M2476227.