Xikers (; stylized in all lowercase) is a South Korean boy band formed by KQ Entertainment. The group consists of ten members: Minjae, Junmin, Sumin, Jinsik, Hyunwoo, Junghoon, Seeun, Yujun, Hunter, a
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 0xb220117a23982b0ab8d3823416e7a328a17d5f5ae40c824f2c9d153e10bb5357. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c997ff19-9160-44cf-bb72-072018907bed.json and https://artists.proofprofile.net/proofs/artist/c997ff19-9160-44cf-bb72-072018907bed.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 0x4b7fcd00e44d26ecfee3a71f165ae2f9cfdfa8880822c17c3c25661c0a1d61c3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/KRD442300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7ad85dc802cca6f30073cd9242df35aa7d4d481dfdc45c157a88d7260b8f71. 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/KRD442300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79384605c08b09dc9f25b8baa64b14fc50d91de7c21768913c50d86a2c5e1e41. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/KRD442300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49b41a13ca61005d6e314f2597378a6513147472d29ce6034e015dc982b42e1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/KRD442400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13abc2ac65fb4c275e1ccfd2872aee68969d92502b6ef0e969d8ee0205c1613. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/KRD442400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6539d1a6969fd1a17672c51493bc64bfeec05653b31ba9a0fff1796639a3a6e6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/KRD442400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971192e5f1e12430aa587842dd9211f9c6ea643dfdfb160ec4a617db2c65375. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRD442400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9267c44e2ec3e8ec20fbb6f1ec50d230441f1f9e380caa1c361549a5bc6ad0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/KRD442400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af02adc0838c49284e6d61d2e47123523d11d2e723501851d41ac9035087b44. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/KRD442400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0e2e2cd2ee4ee958e33546bb94705612afbaa4825c300f67d9dc78ce39a5b7. 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/KRD442400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb343ddb2525ab6436a4320b96d3ca14dbc52f75019b8233a37df343101751b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPPO82501577.