Nastyona () is a South Korean indie rock band formed in Busan in 2002. Members Yona Frontwoman Yona (Birth name: Jang Irang) was born on and is from South Korea. She has been the lead vocalist,
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 0x3fd2858d13025ca119513dffd729fc4314ee7565c71364287544e845d9877092. 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/97d297df-1f0d-4bdb-a7ad-b7c13c0b2e41.json and https://artists.proofprofile.net/proofs/artist/97d297df-1f0d-4bdb-a7ad-b7c13c0b2e41.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 0xfe409181291b67f0406be32688cba25ff797d92caabffbdb35a7ddd127004ecd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA341503837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3f539ea653901708af269b806f6f2b824fcee945c20f220e059782e54bc0e9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA341503838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa573840749144775ccb1b6077a5900046dc48aecfbefb5513910c3a72450c1ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA341503847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1b1bde253f7b4ab20856b66c6f0291154c8c73fd7752f1932eb902e6265232. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c5914a7d4542848ba19c3c17938499f6bfc23e5a323d86fb1fa1d0c0305e5d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830106cbc3b733721ea4f03f998e97b0d4eba3ac4f2a69202c220599e663dd02. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24a97e99038bfdbcb6b86843cb818229c4ee7eeb2eb01771abe165798d236e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daf2971573a97ae90a2e6fed0d037b43559896645046d282494f61dbf74eb35. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06bf8c47ce3d70f9a8a9c8486577f7b641c81d4186691f1797d3ee3138aacc5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9116e8f8a2139597277c6fd7026a411953c71cf5a5998e00b2431d02072600. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bdac4517a2106cf0f36d2351a62357ef4fa727b80df003a7f8736e5911f423. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA380900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd0f8aec8f780652b88525307ee35d7e10c2ca151b68eb58468c429403c3ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e766ece95ba15faf8e03a887d28c329a2b2e548df813cb1cc355db43cd72cd3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176f2ef3c61b49695f4cf726afad966778f6e2a91421b50a41813cd7c320444. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a638ea78baff781debea5d530399d59c9b49de2afc47e0e27955bbd175d095. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e81b1aaccd4ffd325b4f45d8eed8d51031283164d4b207af3be90e2e22cd3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA380900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d55ed887bf3f61ac406799884aab5db51ec597a0a00bbf45c5ed6810582c25d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA380900511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a925b1f345df8e51abba19139f4d23be3c257b4929043049a83dabd75a4f116. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU0040521.