Isaac Hong (; born 12 May 1988) is a South Korean singer-songwriter. He is best known for singing South Korean drama soundtracks, including "Fallin'" from Queen of Tears. Prior to that, Hong also won
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 0x2eda0c4fafd9d9c39e779a4a8e06bf794fb31c77c0804c8a1653ac9447199254. 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/b1bb97b7-4021-4353-9d44-5ed996f20383.json and https://artists.proofprofile.net/proofs/artist/b1bb97b7-4021-4353-9d44-5ed996f20383.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 0xc36a58ac165f0330543e3e20c0843e6625e24e624e60c5c026d08abef60f4e2b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GB32E1503812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be9a4db2710424cc46bca140516e1f06e00595e743b0f8e3925143f7e23869e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB32E1503813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24969b6b0c89cf115fbbaddc79bbf99cc49afeec5aa2913fc70f73ae30800756. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GB32E1503814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e443f72ff90b96831176598832a3eaa672bc7adade22a993424bd414a16bcd7. 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/GB32E1503815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d2054676bb199dadf71722bd497c2865040bbfcb07e760e83229320759b3fb. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GB32E1503816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5670d7364e5412ff775470073f076eb441c818e565c7efb7ce9a68b9cb623e. 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/GB32E1503817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25550f7636eaf1573f0fee9ed3e9e40b775521054b5a45118e518ab108d01372. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRB471900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5f000fa27334a1b95fdbb586577736479a7d8849f45bda8fdbf98523988cec. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/KRMIM1916436.
Strangers from hell Pt. 4 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cc7e80c224f20a9cb693ec61c44a1b6a5caa16bb56cad68fef129ab660f0a9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEKE1916842.
THE IMPORTANT LITTLE THINGS 놓치고 싶지 않은 사소한 것들
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef44322c79b655706f089eca80257cfcf05fab918d678d2bc9ff44046217717e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRMIM1923068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64efb62e0799e03c9e2a484a5f204221385ff3b422ff1645e09fd158fe5a5227. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/KRMIM1923069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0020f1888ff1329621faded0acf969441dc5dcc366897970f4c26aa468427243. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRMIM1923071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa895443fda60f04eafba4875c21e18abe40b3f4835e0d3d50fe67a3aa6fb6ffe. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZF452001300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68299376c94393fc09a2e913dbdea95f95ed6bd049b13d651466c51ac9dc2c0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZF452001306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd576e4abc38d9faad16e34d96670b380da4b9b23e45e79d515816142f67b9f17. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZF452001308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56884d41a98ea8757547cabfdc4c6bbfc2654ff64413d8951ff920e26c05c38e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZF452001310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2015d7cb1a1c3c3ea4a028170cc95b8bb66671520f53b35327d58d6cf9b87c. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZF452001311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1018e1e4b69900fb7c71f13c585f906c1ee996a76e75786b58cffba84d309b11. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZF452001312.
Da Capo (Original Motion Picture Soundtrack)
The Uncanny Counter (Original Television Soundtrack), Pt. 1
Lovestruck in the City (Original Television Soundtrack) Pt.8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037fe8078093f341b65f4bc7eb68f747a39325117d5cf3afc30747afad102baf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRMIM2103986.
TIMES (Original Television Soundtrack) Pt. 2
Happiness, Pt. 2 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c467b85fe00366ff08ab955c01a91c036fca5fd13c060ce2f9320a2242e00d7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRA492101357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a1017430bc64f9b39f3aa98c4c982b3861baace65ced193c5f4149bb1f6adf. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/KSA012135041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b46b3dedb574757eba3daf75278f18d6d8bc1389515c109ac7bd94e14d2a5b. 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/KSA012135042.
Military Prosecutor Doberman, Pt. 4 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaecd1c91d8ff897352982b0a5a8468d9ce7e240712e16402124237a558a12f. 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/KSA002200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd82e39ba2cbc97f3528f82aede2ab262f0450be76bfb130f72f04d6ab43c48. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/KSA002201472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88710a6cd280df4a8b1a5f523ad397616d3a44b49ffc3725897737cf06b78de6. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KSA012179726.
Kokdu: Season of Deity (Original Television Soundtrack, Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a5bddf1a16cc11df56e43085be6220d8aacfe3ea026b931dd2a1f49630691. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USA2P2316855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3589b072ae38c22d1d1950843a646ee33c9ef67595a36156b19e329edc3ba6d. 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/USA2P2316856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7817114b75bce6832258f42723886582bcdc3a2ccadb443e859ea888b7c2f5b. 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/USA2P2316854.
Perfect Shot (O′PENing) (Original Soundtrack)
Queen of Tears (Original Television Soundtrack), Pt.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c2c8bac31a308021814467bb9adb5b5307148b204dfddc40f6a8138ab1c57b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ8BZ2409919.
Our Unwritten Seoul (Original Soundtrack) Part.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86f627dc4520e5ac8e1bbc98402c5d8cc23775e0fae845d6eff1dfa350a39fb. 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/KRMIM2203485.
Military Prosecutor Doberman (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99596fa272b19c5b9bca28520ec0d36b4ec07c43e959636d370eefa7c3553b9. 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/KRA492200262.
When Life Gives you Tangerines OST from the Netflix Series - Chapter 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3543917242f607d5aa2896011a82c6b3609648951e4ce97dfacf22ac2deedbe4. 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/QZ8BZ2512692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208caacbcdd0ff23dcf3cdf0ccb04ab4518fff31a92e36cbafca05248a198191. 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/QZ8BZ2512693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf292ea04774cd60d0828947d3e0629b240631bb0deda047028134554d16046bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEU31911955.
Strangers from hell (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871dbfe6ca8512957bc335789a0000411ae0876daf18e2941e6688a944216435. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZEKE1916855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a8ea85f91de446b39dbabd6d22f2422306f29ebc4aa158282820e3f105ef72. 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/QZEKE1916859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66795a4e1df04e9d97e65077527d82dd067a74e760056b90549e0fd64af97262. 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/KSA002200009.