Fiestar () is a South Korean girl group, composed of Cao Lu, Jei, Linzy, Hyemi and Yezi. They began their career prior to debut by releasing a duet with label mate IU titled "Sea of Moonlight" in July
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 0x152cd876ee8739c03e5d808209b62321075e9a8ec93bc7ae92e885282f673f1d. 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/92544305-7dfa-4827-a94a-9b56279d0f1d.json and https://artists.proofprofile.net/proofs/artist/92544305-7dfa-4827-a94a-9b56279d0f1d.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 0x134544093ee87c52f0caa00347576164f6c38f654cfc047a90c1ad673d6a7500. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRA381202216.
My Lovely Girl (Original Television Soundtrack) Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f1106397a189183077010e9c5cfee3097e357192521a5d838169ff82f9849. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/KRA381209110.
My Lovely Girl (Original Television Soundtrack), Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242ce82c12337f9dffe9b5726f379bffd25a8bc8c6f59562129b92a020ebd903. 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/KRA381210164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f440b1fb09df2622249f52143a8f1ae0e025955607ad9329dd931387663fd. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KRA381210165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54849efd47af4fcdcf87bb589d4cb52d7bb26bb36cc4f3dd4d8d8f7c5332bf4e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/KRA381210166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15efbeca00524f237c6adc2e5e3c6cc81f0887f3bdae8738eeaebbc08b0023ed. 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/KRA381210168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d3cdaf8d6405186707669d9b115fe81ebd3c66b7451504bd9edfb7f0f56b91. 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/KRA381600349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f46504718817ad3bd079fba90b6e0e4700c0fb8dee0f502591ee5b92735d49. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KRA381600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d604a33622aa7e9e4743b8fd37a4d77f3e0d4b87ce8649a349b58030ed116b. 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/KRA381600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a5c5e6cc45bea2594623f310829c8c2f017c54308214dcdf83503c5893c4e0. 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/DGA0M2497655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91be29cfefafb6cbcf2bd18030e4d65d97463ad56ad82215f214ad4c7de61455. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/KRD672400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc077aea5f4ce490f920e796497e15549974240f476dfb41b89dffc5df2afb4d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CN2DY2504837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b3b4d32836541b1185e8f80dbc5f03e65b0fc20c82638d139dfe8407bb6057. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRD672500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd320309ffeedef3b68f98216d46287d82b25fbc19b6841d42393bc4ab3db4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA381201220.