Khalil Fong Tai-tung (; 14 July 1983 – 21 February 2025) was a Hong Kong singer-songwriter, notable for infusing a R&B and soul sensibility into Chinese pop music. He won the 28th Golden Melody Award
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 0xd3066d334de3b2671c32196e976819e8f848355a64826a3545ebc65419e75e80. 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/2b9dd391-9c17-4988-90d3-1630e115f5d1.json and https://artists.proofprofile.net/proofs/artist/2b9dd391-9c17-4988-90d3-1630e115f5d1.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 0xd5b8fb09f776e8d1dc56b806b5666af8977a47d3fcf90072f47067b2dc386349. 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/HKC381600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ca1e6ed285be6ca37d90acd3a7dcefa8a79fd09bcbdc629a2ef44d8f19ba1. 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/HKC381600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf573572b621139951610f0fd2c1c6ec5ba64d4d1835feb80f5012551a142cfe. 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/HKA351501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6964fb1017b4ae97be3d644d5b1f235b4cfe4332186913984fdda5ac274cc293. 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/HKC381600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d6a7a1f3ade4a68ae1b866f6b974098cb9ba389d98f5a930e11f2c3370a0b. 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/HKC381600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076bc8506920fbcb71432b3a05406e7454c8b9ee47e3745f2db06fbac4d47df. 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/HKC381600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5574d912da5b891d55ce423acc47914dec72486ad6a23cc74b028386cf76beed. 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/HKC381600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc37038d2b228c17aa46e4153aebade664885d78173de4b94ba3c9fb49b24d. 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/HKC381600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfdd52c6c0712bf4a500b56cb15d4467b13bd129351d742f9fda6522aceca1e. 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/HKC381600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96894d0914d5a59137974988b629aa5d0ecb23ab36fecf275e115e30b62de10f. 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/HKC381600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4afba9d6ad7ee42380d5f406e2b698cb376775a42d4fa2aca1dc6901a15743. 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/HKC381600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd904cf745a6a1555fdf09289337c406f480d62e29169387e38d81299e3e4d130. 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/HKC381600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40de7a6411804e42945abde081f15db2c3164f84c5bf89a1545c6d79c6492cb0. 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/HKC381600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a69cbe6d3beb93244992b755ac7a3b8e2bbd05348f99cef1b0f96f9c97318ea. 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/HKC381600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010e9a78fc6430d510819873af1b1ab013686b979911740793690b0cc7081823. 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/HKC381600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd57d217cb5fb2b355eb93163f6ae15583d0f7997ec63be81da0730477603f4. 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/HKC381600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0864ef699d1df64af6f357fb7ca5ac6c4641575202fe39ccfaca9ff56ab07c6. 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/HKC381600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40ad15b31cf9a555d066cce96520c4dd4af2265445d7732adf28b2af1b3dcce. 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/HKC381600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6221be4fbfd79f19673f631dec6797b376e0828a1f94a6f40c05c7cce656f37b. 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/HKC381600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b3a1dc9e3c370b8130a7f566646a0e4dd86d99c89200fea372baa1b3a2b64. 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/HKC381600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2657bc49cc66e05597f8e06d13540afe421de261a0642f9557d37afa1c1eb2. 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/HKC381600021.