X:IN (; stylized in all caps) is a multinational girl group based in South Korea. Managed by BeBy Entertainment, the group consists of five members: E.sha, Nizz, Nova, Hannah and Aria. They made their
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 0x0065af89904b9f2a79056c7e584555d79b57fd49daed823ea5f59ad283853135. 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/cc2e96f2-7dbb-444b-8c32-a4fd6a5e2b18.json and https://artists.proofprofile.net/proofs/artist/cc2e96f2-7dbb-444b-8c32-a4fd6a5e2b18.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 0x1dd8d10971614cc20ef0d562f6f2ac541f463985142e7c9c82e754a810a77699. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KSA012241234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f245bd766cb933551482cd2f515bccebdefb99621c8c7029bb2a6d094c5a88. 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/KRA252301625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fc17d2bfb5ccaf6034e69fb44c154d0404c8cc47b59767ccc005fe94bb854b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/KRA252301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df02de2237c48c04945c82874805fb279e5cfcdf8208315b905af541191032f. 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/KRA252301627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509aeb927a25fcedd7bb6cc50663d98d68f05d7cb8441d69ab843509fc24029b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/KRA252400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b51423f1fec1d47a9dd7480244235206fa3c980402f61a9fb490aec74d2d4d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/KRA252403202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddce5379ea37a080f6b0763684498bb000e254ac9b62c5ecf359fb9c325c1dc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/KRA252500975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941642e8143ac1cca9850affee441519162ea3d3389f30c285ac9d9211444f7f. 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/KRA252500976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53336e9fa63338620b9992e006fb84b59cdc0039f0468deca2d84a4d2f5af3b6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KRA252500977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dcceb0410ee7686debcdc63d0d8dda9cc0eed6204d296a7cf34ce00ea20243. 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/KRA252501498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe278bef98a7d6a87841de24a769f5af62f914bdd039f9a9c621404b873cf6170. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:32:34Z), 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/KRA252501499.