CHIN may refer to: Canadian Heritage Information Network, a government agency in Canada that promotes Canadian culture and heritage on the Internet CHIN Radio/TV International, a media company base
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 0x06f49e5a9fc6ec1427355bb49868cdfcc6afb797d30ca9acf58c0bca678ac6f7. 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/87249b42-6608-472b-b103-a3bf46b1a3fb.json and https://artists.proofprofile.net/proofs/artist/87249b42-6608-472b-b103-a3bf46b1a3fb.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 0xb5ac70d3c23507b6fb36556a6b68663afd85fbfc81ca72de35be99dea61ebe7f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/KRA382204934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0aa63e6dc83c79b66fbb5dfc5633334ab8c226df54a0d8ae1a8b8a322c28e9. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/KRA382204935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b3891334d27fd873f1f2d8a4508d5a351573259a96b1dd8ff506b76f829a79. 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/KRC712300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd40f86592e1cff7df83ee0b1f638627ad8eb19aef45679884d16688b637f9a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRMIM2460248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404dba9ce165fe279ebfc83bd469b5f5974b661b3c1b15f60f6c084b9e866298. 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/KRMIM2100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02756361a9bb5379051675212d83daa2c91e69efe8b2a84dfd581fc1b3daf8aa. 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/KRA382322147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4049329792605acd66cba95361eeae43eb80c94e294af6ea32163c84df1d78f3. 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/KRA382301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081231bc2e3152143c05569d2e7fa648002053f28622b80d35428a95b07740b6. 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/KRA382301131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75b986079bd060f6e3420749a424c582267facd84bc161b6d8e2ce4210e4dad. 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/KRA382301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a23971aa32f7959448eb609cafb6527821164ccfa501187504e9d822a41108. 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/KRA382301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616c7944d3fbc0c8648e21a6afefb002c650bafa5a03c8170d4c1bc64ac5ed0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRA382301136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd3a698989adcba06a036227199aeba833de3adeaa6fc887c9a0ca0d6884f83. 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/KRA382301140.
GUIDE LINE (feat. LIL GIMCHI, Chin, Louie, SC4F, CK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ba1091cbe79baafa81f9251ddcc6a2474cbc6a70f62ffb39796966c3fcf2e. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/ZZA0P2221737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf38f8cc7f3a9377cf1da8518a49458a13e47538eaed657a52d7a345eae1792c. 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/ZZA0P2221738.
Bong Joon Ho (feat. LIL GIMCHI, Chin, Louie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b7e3592fb57027657142834befd9d2ac7b736f67833942cf4deb710709edb7. 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/ZZA0P2221739.
Lifestyle (feat. Chin, LIL GIMCHI, SC4F)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8391394f3712b70a9940f157e4f499929fc6fdb2059300f282cadfbd32e49d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZZA0P2221740.
Finale (feat. Chin, Louie, SC4F, CK, LIL GIMCHI, MADII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac640feb534b4211f36d7483e8f03ec49eabe938b16232d9dcf6902aa0d5d2d9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ZZA0P2221742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5237a2d1c23a5f0f71e60c601112856bab74c7494ffab5ffbef0476ac24fc4e2. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/KRNAR2332651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1d939f0cf414e9910667aa35d01981c3b89c5ab18d9262e07968a446d22a78. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/KSA012259401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346852dc9156c9a3ccbdfabea53e46d38f721853df7f45ce481d0de0004ef9df. 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/KRMIM2429605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5937521f75b0d043b3b5642e515f3f45a821753fbbfdce82c394a9aabb537587. 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/KRE132200003.