Sam Kim () is an American singer-songwriter, producer, and guitarist based in South Korea. He signed to Antenna Music after finishing as the runner-up on the talent show K-pop Star 3 in 2014. He made
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 0x657ba25a7651abb142b85a1db65854dc1db30d7bf0d8d1de9f21c8b01d9e4ea5. 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/5101cba8-60e6-4582-884c-57254cb2bbeb.json and https://artists.proofprofile.net/proofs/artist/5101cba8-60e6-4582-884c-57254cb2bbeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nevertheless, (Original Television Soundtrack, Pt. 6)
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 0x900035dea725d663e4d9ae29a8dba50157cd803acca461cc5057cb5d15801412. 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/KRF702100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2456e90a96babcaaec8f1d5e34ff6c50c43d95e5cca8460db736a42cf6a849. 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/KRE432200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3af14306d4cf11de566b6a1ae138048a03986d7b77ab01cd204f4fddda5337. 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/KRA251901621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f93e2fbdf2f98b1547799ddffbf368f6e50118215e1e9f77977f04203e93eb. 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/KRB462200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644a051e2b23835e8a1d7d2f035a3cb21c07013e362f29c9cc0d4b03a0d644cb. 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/KRA381701836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cd234e99024eb217b5e81278c3e75b14255c4fa77abe755699c0160d7b7447. 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/QZF452001982.
Our Beloved Summer (Original Television Soundtrack) Special
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167c5c79465928e44645af61c7e597e81c0839e8326425c156a5c3ab9812bb0d. 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/KRMIM2200998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9762de8fae61110d8b758fd98dcdb4176e42c0b24ed141bcedd16ae00ed5298. 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/KRA382001359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6910009e65ed5d1e6f843b7f4bce5abff462efa1b21cc4edd96693838b83ae15. 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/KRA382163896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390037b99bc78007ffbe060a957333ccb9a4fbbdc48002820d3165c31c943e88. 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/KRA382007039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b355e1bdca2f74fc20289c23556dee849f6c2960506fa6c7a8cb3694de3509. 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/KRMM02311144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745c61d6660df3ae538ab954e2aa6af249aeadeb7efd5716024030ce6842fc9d. 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/IDA682100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529542dfe63fce928dd1fc8c21cd0cddff18d243c543c052d616d57d0f3155af. 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/KRE021900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a658f9e235770930d3d33d41c91f1cfc570f4baa3c35ddd78de61e73b55860d. 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/KRE021900388.
It's Okay to Not Be Okay (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33065fc7ce21000057662638089f37dd4372c4551c8d12617358f839c00885d. 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/KRMIM2017142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2456e90a96babcaaec8f1d5e34ff6c50c43d95e5cca8460db736a42cf6a849. 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/KRE432200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5dba2a30c7c800cc9e1fd748c650c89739fe70066c909ed9ffb889353815d0. 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/US5TA2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a19ddce1bece459854e2c0997862c00a04f4fb9b82b6cd368fc86bc5f447b77. 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/KRNAR2204237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745c61d6660df3ae538ab954e2aa6af249aeadeb7efd5716024030ce6842fc9d. 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/IDA682100178.