Kenneth Choi (born October 20, 1971) is an American actor. He is known for playing Henry Lin on the television series Sons of Anarchy (2008–2014), Chester Ming in Martin Scorsese's The Wolf of Wall St
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 0x912e8753bf5d25aa7378a602fc92effb798d3badac7ad8be5c2d9ded57adc681. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0f304c5-e2f8-4711-b646-6e180b4942b0.json and https://artists.proofprofile.net/proofs/artist/e0f304c5-e2f8-4711-b646-6e180b4942b0.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 0xbcf6982a912a81149c216d1b35d807fd36e0db0ea2a3e87654261053d61aba03. 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/HKA418600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a514de3b35fde359c67ddcb0ccd8b3e1dc8406eb025c9c967581093cf740e5. 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/HKA418600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6cfe5d1fadd885505ab9843b7ce7500b72ce7997d0a8099c8d09ca3e064767. 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/HKA418100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f904e4be4cb16bbabeb155e5b68af57888192cb74d8320baccc1818c20f1f2. 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/HKA418400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e5b1192e4ea61b93322932a00f4c81af588dc74e5f8f2374ccfe916943531. 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/HKA418100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3f030838a6ef2fa86f5b690ba90c02eb646a63a44805bb767b8b252f5fda35. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:02:12Z), 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/HKA418300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdb2ee9445fcd86866757fc84ccafdfec65d774072e78646550d62f4214e686. 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/HKA418100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f84b3e7b79693bbf53007b713c526e1a4e5636d5c8f9b785efeb3b3f4f7641. 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/HKA418500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d51639da9048e72b927e2ac2b92e589d897e4af4cee065c1f0c66a16ba84a. 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/HKA418300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3a8a297109a0d4cf72f3e8477eb6ede51213b5d5bec02bc96db4f50468d9ba. 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/HKA418100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199042f3a124048f2484e78abaf06650e72c32c254f4b8320c9a8fb8819aac13. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/HKA418100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7da58093b92cc69a13cfc2cde5d30f68a4e514f2c3c3b9c627649cac7987e3. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/HKA418500001.
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 0x4cf617d85c146b2e55000d3753c2466ea12fda5fcca6097cc1d2bdbf467ed037. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/HKA418200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75191fd689c8fc37eef0f3f7c1b3dcdde70fa375dcd26020b082a92eabc4b456. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKA418600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6982a912a81149c216d1b35d807fd36e0db0ea2a3e87654261053d61aba03. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKA418600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f2c8b2c27959a4baa80673a757ad858386e7b3dfed3c40f10ad1e7e06ca0e5. 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/HKA418200001.