Don Li Yat-long (; born 25 January 1982) is a Hong Kong singer and actor of the Emperor Entertainment Group, Music Icon Records. Don Li was a finalist in Talent Show 2002 in Hong Kong. In 2003, he beg
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 0x5e6e42cce82fe041b198826fae95e42c20da96d28d3b25ca997719816ec15815. 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/74d7c610-ab10-46f8-ac4d-1c3fd41039fd.json and https://artists.proofprofile.net/proofs/artist/74d7c610-ab10-46f8-ac4d-1c3fd41039fd.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 0xe7a1f819952d31d2ca485702ed21bc52fb49162bbe71e00967bf440dee56385b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HKE460510802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c6ca5feae031a318fb3c49af2ca5e280b1361050a6b0aaf45af899faad3548. 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/HKD250612107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f5e7b9e8a2aa758143d1f0039ddd5db0691e1cf70d80b710c9ea25cd0c3f38. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HKD250612201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39495a1dbecaca3e35f11679f1efefa4bacd07dda05059d224de2a20e9002aec. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:16Z), 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/HKD250712510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd807ebadaab6f74df7975d887885d8d3097abd072fc67e649174105ea6a8b773. 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/HKD250612104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd807ebadaab6f74df7975d887885d8d3097abd072fc67e649174105ea6a8b773. 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/HKD250612104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4a3c52fb51ba4f43d5f4c3adfde0982b846bb705ee4a1678c8882fca40994. 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/HKD250612103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd807ebadaab6f74df7975d887885d8d3097abd072fc67e649174105ea6a8b773. 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/HKD250612104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4a3c52fb51ba4f43d5f4c3adfde0982b846bb705ee4a1678c8882fca40994. 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/HKD250612103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb25170ea1393a8f5112cd1a060133e382684cf6eeb7d7bcae576228858d0a9. 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/HKD250512701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab54b180cdca36953a7c37894a055d9d2df6ad043ac9b72c3e11e2f4a58b3726. 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/HKD250512702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb25170ea1393a8f5112cd1a060133e382684cf6eeb7d7bcae576228858d0a9. 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/HKD250512701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab54b180cdca36953a7c37894a055d9d2df6ad043ac9b72c3e11e2f4a58b3726. 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/HKD250512702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab54b180cdca36953a7c37894a055d9d2df6ad043ac9b72c3e11e2f4a58b3726. 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/HKD250512702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb25170ea1393a8f5112cd1a060133e382684cf6eeb7d7bcae576228858d0a9. 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/HKD250512701.