The Koxx (Hangul: 칵스) is a South Korean indie rock band that formed in 2009. They are also involved in the production of k-pop songs. History In 2008, The Koxx got together and played a show for an
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 0x758609af832c8e3e35006838355b0b9d65cf87ab9eb11b3583b8bc007f413774. 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/68e48b6f-9949-40a2-ae08-3ee1fc59eaf8.json and https://artists.proofprofile.net/proofs/artist/68e48b6f-9949-40a2-ae08-3ee1fc59eaf8.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 0x9343cef8b0ad297172efb766132c5b510f04404bcc87d752dd5be10253e6a78b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:41Z), 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/KRE891800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c15194f0ff6f0a467927317767e7dad4a9bcd71dba0b15c4183610e254add89. 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/KRE891800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04581f23248986e95c096ba68e4d1bde30d287ce9ddcd5b1a19f09a04af35c3c. 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/KRE891800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a2198205cec4004e102dc4cfaaec3b04478c54cce39e90247435fcbb6addf. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/KRE891800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ba37cb347b32acde3370b2479213ef54a3c746110ec06032544ab3e2c00fe. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/KRA341541424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209ab3a8004ecdda69806c5181ec648a5032a21f73fd3ea0bb502c9b363ebee7. 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/KRA341541477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f500f108ac77043dc597d8994702f9b99d725630efd4560d81e946ea342741. 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/KRA341541478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449826ddb8020ba6f3dc9d18dc558bab1565fda4adb4ca4ca006d16e80c64a6f. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/KRB621500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf8b9ec531b19020160641d8399f8e9e60c363449fc4dd2a1314737363a61b3. 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/KRB621500073.