Rocket Punch (; or as RCPC) was a South Korean girl group formed and managed by Woollim Entertainment in 2019. The group consisted of six members: Juri, Yeonhee, Suyun, Yunkyoung, Sohee, and Dahyun.
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 0x1ccce56fc36fee4dadc64857009dc7ab3e9aadbd6ca6a9ff6a99f2aeed14e7c7. 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/347d4b49-507b-4a74-8a8f-9f4f048a9d4f.json and https://artists.proofprofile.net/proofs/artist/347d4b49-507b-4a74-8a8f-9f4f048a9d4f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3fa4666385eb5c4f1556e6c71926a2637237617c66b570bfa8568f94b55a5. 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/KRA381903829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce688b9fd506b4d638e20f04f4b7fcfce942c7ad99b425fe62c1eb714a26dc78. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRA381903832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc15a90af4083a0c361f35af6733b172f8c8779dcf804b6a68564b8182bccda. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRA381903833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c1dd6cf1b15611e63536fa70ee027f8ffcd9e8c2f31773102577b698e6432. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRA381903834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66731e2b03c95038716265c459aa7e2d8c474b625b2ca2a6ef7f062d40aac9d6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/KRA382000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e621bbea5f607efba9d0777f4ef4121c734e6aa7a13521e3b2f3aada11b00bf. 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/KRA382000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2040e823812b07fa957ef6d761e63f17bdafa8016a3e1fc94c73951b6166be5b. 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/KRA382000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec6b06a07d9fba04db94705553e7de482c9ec1f32c48213cc58037a5ade5c79. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRA382000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade311a31a8daf4391be5e92698012ba94763e568db84752258ef10b59ee1f9e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:50:36Z), 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/KRA382000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7820189facdbcaebffd22d4d7f98c7c9021f5b172e5392c20004da14ce7cc69d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRA382003227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12481daf8028b33049c0e1b674fd395a7f275900260b45de63d77957c58b8ba. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/KRA382003228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7763f5da3d5dc44149d89f31d71f6f7f7f4b6c6328419bc1598336a878512e5. 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/KRA382003229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34afde0ce414fb237887b38fe678431758c9faa9ce0823ea6904f8b0cd854229. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:50Z), 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/KRA382003230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7c2f9be1feb70a0a603f2743a9d69ecfc122efe273187185547da1a8ca9dcb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:10Z), 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/KRA382103733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e00b5c17da13958b892872feb9066598167ee94981dfcc4054c46805e06d3b8. 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/JPN002100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dde1b41d8389033b5e6b3d11bfc337322d8e0f0da15a8c14827bc12d91fcc5c. 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/KRA382203672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3601c9fd50df902635e755a48bc1faee302a54b299deac53e9371a546d63e84. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:57Z), 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/KRA382203673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0abd81752a9c800b9ad6a7060593b315b79f0a4857efcd0d3d90cb0cc0c697. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRA382203674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc681a14df3fc6c9186a98b6f9d36e9d315f585666e074d3d7d4e29c3e34ba19. 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/JPN002200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd793022056bf41409d6039abd8c3354a9bd8a1ee237e2bdaa97c0558eacdd. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:32:43Z), 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/KRA382206992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e00b5c17da13958b892872feb9066598167ee94981dfcc4054c46805e06d3b8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPN002100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f44c50fac79586b38f75dfb8774be75e444c850025a3dcf2f7fdc0e14966a8c. 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/JPN002200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b57be97a5c4977a3d03ac4b8cc6da888c6fa1bf7c32c0b097b34870ca00e61e. 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/KRA382320441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a579d00fb02e81c5bcefb22859c7c679b8142fc677d8d5fdbd37de00acd132. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:01:14Z), 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/KRA382320442.
Secret Playlist (Original Television Soundtrack), Pt.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7719380d642fba3c5fd603f50794e75ccb42aba0c6436c40af3b1af08d974a22. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRNAR2361427.