Blitzers (, stylized in all caps) is a South Korean boy band formed by Wuzo Entertainment in 2021. The group consists of six members: Jinhwa, Juhan, Sya, Chris, Lutan, and Wooju. Originally a septet,
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 0xd981ba69edaafa2a137586ca66168d3f426155967df4cb29e52e435915499319. 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/8f5d9cb1-cb50-4c8d-b681-ed3d92973f56.json and https://artists.proofprofile.net/proofs/artist/8f5d9cb1-cb50-4c8d-b681-ed3d92973f56.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 0x9648ad39730a2aa0e1d86b8be246a37bf5c131bc7dc056e6980f4b49b950877c. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/KRMIM2118942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee5038c64c9cbd5fa8ea18e18a4c449bd2632ccb3b51b181cfcc84742c0afdc. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/KRMIM2118943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331582f64c366806048b54607e8c2709963bfb1e016966906238a1b5dce9accd. 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/KRMIM2118945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5964ae95b0ce1a0a623f91664f68bc5f211ce1e50f0f76e35853f1d59c712e. 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/KRMIM2118946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fdf7e5dcc059c2e6e41bbd0faddfede592f318d43d2ab54df9d98d54f5a3d6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:40Z), 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/KRMIM2118947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4125cb98093c4497fb039b1605a86ad47364ce19920387a8c1781486dd3b4cc6. 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/KRMIM2140295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9472527c00c49d5aa29aec66ee683b5812c41d747d634850c7ac4f18be48d95. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:24Z), 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/KRMIM2140296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540658d8900507b224f851020b03624713e0bfb791295cf99211fbe4a90c1461. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:47:54Z), 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/KRMIM2140297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe99414934aae5e2d010838e51ed9257ea9a5601cf111dc242b8ffb1598f33f2. 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/KRMIM2179398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3255969a79ca85139fa36a74022c98ddd22c7b71ac27a9bf20e0484a4d6e3f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/KRMIM2179400.
Cherryblossom After Winter Pt.1 (Original Television Soundtrack)
MIRACLE (Original Television Soundtrack) Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613b577c2667f90e197d384d35a40b58f406e0e5592987e1676892bf7f558843. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/KRF702200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328941712937a9b94cbd8a3afdc394406be6a318f35b0d9bcef4c806823029f2. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/KRMIM2238036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7def09c8e92fbdc580a8e9deb37001b0bb64840e207114a87950e4c59c9f557a. 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/KRMIM2238037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cb38354cda39f1364dc5ac4ea2006c70b79d7d97e979b8e3670bfb8f82a2b9. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/KRMIM2238039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a529e992f58b923e0492828de872812f36a58f1056d87a05fc64880f561a293. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/KRMIM2238040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419d35f7e35e9f9917b8d4e8a166913f6a1cb88465c018c76649a52f8b99aa59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:07Z), 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/KRMIM2238041.
Show You (From "Beautiful Moment" [Original Soundtrack]), Pt.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a46d8d8ec2353dbcae8a8794d8ccd491608aa739c63c89617ab94c4c80f9d97. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRMIM2345741.
Jun & Jun Pt. 5 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d7d7e653aaefe87477499ac9c4cd1b23068a18b626633e59a40e20ba4c1349. 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/KRNAR2311256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6900bd5c77c30228f2e6e0a0e872b0c70332f628f5a7f41a5304f8314054696. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/KRA382403656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101ef2d8433c5ee717d4e14a1f2885865c8e69bd42a7cb3e638072bd4df53a4d. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/KRA382403658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411001c1978417d7fc98860433914242ab15e4771b83f90e6890414ac34a5a6. 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/KRA382403659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca45918a173731609a36f1818c046ee08823fb4d3fd4a3f0c355a4244c29dad. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/KRA382403661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42a1b751f978d77c982aae2e26516eecf6ce881847b17e244f45e816b088f18. 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/KRF702300125.