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 0x0d9520fceeb5167407874740e702156d6fa157826bd6018c55632ca91144b01d. 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/0b3dbcf2-3ccd-4dcf-adfe-9ecc7e2c154a.json and https://artists.proofprofile.net/proofs/artist/0b3dbcf2-3ccd-4dcf-adfe-9ecc7e2c154a.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 0x7a733980c5b088d58016f77bd067e8d9bb5b40b1ca61300781c30a9a4e1fe761. 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/KRA341538046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994a8c49f48b77f3a6b03294bbb8783f69122713df3d022da47ce41d71922eaf. 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/KRA251601491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5758c66fdd269bcba4b341f83050064f7d9129aae6ed77109b9f081355672e2f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KRA251601648.
Even If You're the Cactus (with Goodnight Stand)
Under The Moon-Light (with Jung Soan & Byun Heungsoo)
우린 나란히 앉아 Under The Moon-light (With Jung Soan, Byun Heungsoo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe209cf3c61b3880325b086252319d2df7de5b4ad318066e0d60647398d52ebe3. 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/KRMIM1806830.
새봄, 01 소품집 `어느새 봄` Spring Before I Knew It
Spring Before I Knew It 새봄, 01 소품집 `어느새 봄`
취기를 빌려 Slightly Tipsy (feat. Lee Minhyuk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5deed3b1b09f50514de3c68af7a44324caaefbef75ba041a42cc332b28240d0. 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/KRMIM1814378.
To All (with Jeon So Hyun) - Guitar Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9a437378161e991771ff591afe55f8cbd80f6ece120506351c1b384776338. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/KRMIM1814379.
난 가끔 너에게 상처를 주고 싶어 But I'm Trying to Tell You How Much I Love You (With. 문빛)
But I'm Trying to Tell You How Much I Love You 난 가끔 너에게 상처를 주고 싶어
But I'm Trying To Tell You How Much I Love You (with Moonbit)
But I'm Trying to Tell You How Much I Love You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3200b248a61ee7867c393d098e036e259cebbdc2b693f1162eb55e3f196f108a. 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/KRMIM1905125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed65a5d7d05b61ba890ff00a46de973e9555d80d6f03e1d39738c1e643f4409c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRMIM1907067.
Don't Leave Me 너는 왜 날 사랑하지 않았을까 (With SILVERBELL)
너는 왜 날 사랑하지 않았을까 Don't Leave Me (With Eunjong)
If You Love Me 알고 싶어요 나는 (With limsojeong)
You're here with Rain 비 오는 날이 좋아질 것 같아 (With Chamsom)
비 오는 날이 좋아질 것 같아 (With 참깨와 솜사탕) You're here with Rain (With Chamsom)
our last winter 그게 우리의 마지막인 줄 알았다면 (With Sung youngjoo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d67e80e6ffdf525fa6ecf80c415c2e99a94ea709e5dd18a0f31320dd3640e1. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/KRMIM2002317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd646b5458c0d075bf60fc44c6f9df1624f5411a7639c3a770e29dd688b0c0e. 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/KRMIM1903529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3200b248a61ee7867c393d098e036e259cebbdc2b693f1162eb55e3f196f108a. 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/KRMIM1905125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae752ea9d45bdb54f05039f2832864c40556f63dc9f9e6c5faceeec7f26f44c. 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/KRMIM2002319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f82afd69980a254450e8c2ba7993320466ab4613451cf92b17e9770c2cefe1. 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/KRMIM1910485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78733cbd3d3188dbc93e9bc865bddb4903dc923d7fedfc43d95f9b10954f27. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/KRMIM1912368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0196e4aa49faf7f15066a7541fcbaac4e47cafd944411ce64325f4f0638fbff7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/KRMIM1914375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5ccd01860c9ae1f70af86b45ac5b1efef62d7156b459cc73b2172461b24d49. 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/KRMIM1918372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac28b5b745c5d0ebc3c381c2ecea1fe41147716e73ce0d584956779e4d6b0cf1. 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/KRMIM1920903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2d569b64359b2f036dc63197372092a0f5de7234b7819db49631ab3b380f5c. 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/KRMIM1923261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b52a7749c1ef83ceaef86fbf0fa4f833d3fb1976edf5a98ad67d48b34de39a. 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/KRMIM2122568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf784f83a8a4ba5fb80a6e3299e816a25e00d07a73232ae0491d50a23d917f289. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/KRMIM2136209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb625de030081ee1b3d960ef191734b3f24ace64127bbf5a5e06adf85f43dfe4b. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRMIM2212906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39411acb28d8f74420e20493a69dc362ec0bf5773f7c1b637fe8b9e8ae6fdf5. 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/KRMIM2219697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12054179d04b95beaf8ddaa864155560baf7270e2330a4773f89f78d36b203b. 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/KRMIM2242842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07613f975858d7b9d46fdd1faf2ef68dc69a6e1132747304683cf5c2d85e9ce1. 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/KRNAR2205119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39411acb28d8f74420e20493a69dc362ec0bf5773f7c1b637fe8b9e8ae6fdf5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/KRMIM2219697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f95356d3af024044bfaf0f43401017aaaf6ccb6d1f836efe8ffc3d2c552d3b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRNAR2230998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb625de030081ee1b3d960ef191734b3f24ace64127bbf5a5e06adf85f43dfe4b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/KRMIM2212906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39411acb28d8f74420e20493a69dc362ec0bf5773f7c1b637fe8b9e8ae6fdf5. 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/KRMIM2219697.
That's all I have to do (with Yoonhansol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd5fb4eef14d3f0b1f4905d80d12db494ea1d6a65bc3e8bf4728be722ccc2d4. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/KRMIM2332078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad58bb2c04eb3622b837885f8d94dc85baec54286670e1a09eed9e70ae87e83. 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/KRMIM2347947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761070c8c89c11c94135ef9198a9d9ca6b5a1ad94b79f9fbbe8f055b26d80def. 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/KRMIM2369343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b36b1572c57c7f78bebeb24069d251cd9515e22015d9ee724d2b5fb3a58f95. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRF632408071.
i love you but i hate you (with Taekwoo)