MCND (; acronym for "Music Creates New Dream") is a South Korean boy band formed by TOP Media. The group consists of five members: Castle J, Bic, Minjae, Huijun, and Win. They debuted on February 27,
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 0x239c7d93e8c3e350591149e8fe33707dd78c1516eb406ac6fc9dd182e85ebf89. 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/76112c91-4012-4dde-93cf-a8da3ac74a11.json and https://artists.proofprofile.net/proofs/artist/76112c91-4012-4dde-93cf-a8da3ac74a11.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 0xba7fa49770879a43427eca7ba327545369aebd6db0192a210f0471a3d70f4618. 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/KRA382000536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad8b857eb83a968a19f7b491ecd9291e56fee445aadbc5d0c59f6efe4337bb8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA382003500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee941d28be00eb403be7b03e3471892a9bab6968a6602f24eae83358db79454. 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/KRA382003502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5100c80665acc4b7a4d4db5e8d1773d0d861ab2766950b4f379d94e45549c30f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRA382003504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4717ad01be2eca1b2f7123ba1496eb4f3435861eee502dd157dcc8636ad88c9. 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/KRA382003505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f261b3ea13d68fbc5790c15b01b519eadcf2bf55ca79b38618677abb32c09. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/KRA382003506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7d4d69f0dec3fd6cd031abcba8c4befc3621cf5dec5e8fcbc74d1a3925380c. 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/KRA382007290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22cf09424cff5853b8410fc0f730c5ec2262066f27fa03871fb29a6b1529d6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/KRA382007293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e9cc83e43d05a6f6c4061a77d47c7334a70da10bee091c5d5e88cdf88e5ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRA382007295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81adc17dce8e8075e92011133f50badb942b5a9aff8a6141b4936ba091a0c75. 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/KRA382160508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7ca9c7147080efa9f780f7ac8abe9f43167f60f7a51c51c9253e27a48f60ce. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/KRA382160509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1bf5ed6a20468440c8146e883138dd8880def6021cba348b7edfa4202bd09. 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/KRA382160510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5563dcae384192f3f011cd98d72d25c21a5c57499961a638d923f0be0c8c517a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/KRA382160511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2c9003fdbffbce699908936b5e392fa44975b92ac9241696cc4c9c774c427e. 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/KRB462200731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7dc92681a4c6c574101b977b78be0f21d0994cb839834b679c41f9f5b895ea. 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/KRB462200732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de82e2df6003a396d3401a9711709f447a1c207c8310f67ce922b7645a3774a. 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/KRB462200733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98a48211a72087f62ebc47834710ff07aef0b803de29182249a3f3dcb1f9a3c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/KRB462200734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6cf8524cb4831dea9b761926bd3de543d71e2d4b8ccc43da94a55a9d9f9fa0. 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/KRB462301181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0da7eb61be8cd7649bcc8df4435915fff7b5d476a560ee09c98e330d5e16cf9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/KRB462301182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99140ca37b16dc5977db0d9d5e1c0cdbe08c71925bbfea3af69b394e5ab3821. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/KRB462301183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a3dd485be9bf4fb9fe002467cb1a2aa056167010ff58c8852cf67693ebc8d2. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/KRB462301184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36d63befcdd62b01a6476e2397e2dc36362eb1c4d24b010011e9f93cd18ee3e. 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/KRB462400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030e3a8b5c2ca631d0dcdaec0eb3b4d934ce8d6efb72fe0e9a1097efc89c9263. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRB462400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116eca5fed06da5606bead52e8aa264c42ef5a176461b83c2437c0b015e05c5a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/KRB462400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f1c6c457b137b514f7cc811261d597467508c18879fd7f184f1517dea69f9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/KRB462400683.