3rd Line Butterfly () is a South Korean rock band. The band currently consists of Nam Sang Ah, Kim Namyoon and Seo Hyeonjeong. Since their formation in 1999, the band has released 5 studio albums: Sel
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 0xbe509f5e3f39c66a5788b50573d49ef9a312aa4bd221a1eb8c5f493592d752c0. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c49db344-d34c-4938-9d27-cfc40bca7652.json and https://artists.proofprofile.net/proofs/artist/c49db344-d34c-4938-9d27-cfc40bca7652.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 0x15894d9acab0cc4fbdc19887445032b5b44987ac612fee6c24b4f6204605e100. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRB461700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0318df71d5ef16a9e9ab48102f4a9539fef98316adadf5baba6166a42123053d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRB461700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c04189611f957042a3aab49f1af52eef3c95daf99145205024cff216ee75245. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRB461700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da66e4cc7fee22045a3953e437a2cc6030fd9900925aa9609b9d8ebe8cfd486. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRB461601296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecaf82dac1f3effd98d656955f3308fdeaaaf2691e5635bdec71da5e82e11f3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:34Z), 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/KRB461700018.
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 0xc05cf5397117273a49da3e0ea0c7e424edbf7221795896c63b3673f3a60bf35d. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/KRB461601295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dca2d552abe5e38f658d4e67fc4b604b18563b67bdfcef375f0c6308b36d8b8. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/KRB461700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab36cc304ad8f65eebae56a00b20f1151fc6950fd6d51320f7b7fdf38db25f1. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/KRB461601556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fecafd3084786639278c53b618162a68d96f130c25cdc5fbdfcdba7ec0cdf47. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/KRB461700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d67cf98f0b91c3a5e3bf665b50343debf22277f3bb64472044e39275de956d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA351202751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b685de6a4300e8bbfaec16f7e8a75962cfe22cc37385b9ce2d1b3854576ac21. 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/KRA351202752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124a3c768dae7ad059e5dc27c486100e82ffef5e8157a51f8b7d854000dcd43. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/KRA351202753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80de9aaf26879d341ccffcffafcef31bb2ab8254d0063b6c465ae9d6d9c1c178. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA351202755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62721b2a1b66052a8ae9cf09a2b9b3a951aaf5e0113a147b483b7ef88ec03bd6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA351202756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5528513d740eef0c091869998c377bd004604a49cf7f7d657e075db849ea6b9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRA351202758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cbcd708de5ff5b3a72bf7e04d8d06558bd33a334fd2bc69195178cd34c6678. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRA351202761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5cccce10f62aa4fe3972bd9f86e4162e35512e209e159223a28a638278710e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRA351202762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff660ca101b001895aa28cd1ead4bfaa296093df8e74b4e70687e7c896e76a4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRA351202754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f453744a56f3cff0a087783646b7da53147a2e91d8f08eaa7903c2f37cd90. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/KRA351202757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d3e8c129ecf013162f4b3ee356ffded82977d41dc8ac34a2d2bb264cd88b1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KRA351202759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe586d5cf79829b997574b487d8c3fd5c257ca1d70c804aba10dd0281cf019ba6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/KRA351202763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7d91b01a7c7f827d023ee4bd79b88acb87c131605ab41600c08d0f254a75d6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/KRA350902495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4250c8dbd75627ba4cc5551a206e76c36766d8a57bb303a1da4569342bfc1285. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA350902496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf967a0247e971d3805e76fcc9da984da3be80327336f862922d02ee6c75ae26. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRA350902500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6968e1e4e514508eeb1e5442d3f7e1d2ca2912f6c0fee8cb7c9efdf4ed460486. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA350902503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1a2029e56bc4587a5f87a9b2e32b49c30ad4ad976aee89b00f255c5cea1e3c. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/KRA350902497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1df147dc3ee526ba73994da62b0619a35ce1beea702a50d897315e7d7e9401. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/KRA350902498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa554dfe666a0b0a8a25b3c4c4226f9a231a0b4639af8049d503795aa7b6c778c. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/KRA350902499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc5cdd6b41b16329b061c5ebed94b3b757a4e0ae83e13bb1ee4ce5ea1a8f52. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/KRA350902508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db6cca159c0bcec7fb3f7fa410f571d8f3d12cd627f5d8b05e4ac1908eac3bf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/KRA350902509.
Self-Titled Obsession (2010 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd0cf76b333d536f5bb623065ac102160540f0fdf1ab28ebc993e9f08541f65. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA350902488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54286c587c3dd6412f1529b5c66ca73e4dd98a5ceffe6aab07fd2a7744fee6a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/KRA350902485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5970ba16e5d7c05a1c7604c7cb0683dab474be5ff16fb616de99543af428c5c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRA350902469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3145f54f65ba4b6c823180e3cf4f0c20633134be36839c30943ffbeef6def05f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRA350902471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90260b4a37da980cf389c407e61bb45395b754c49f7ab12f396da40bc1a7f24a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA350902347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a56647a0bad5492d6e97436e8c14c48ef578f4f29cc7abe19a194624f8bb7b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRA350902348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5e2e7dd6510310677c788e3bb4ee0342d9aa0d2d59e1b47774b5eac7140a97. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRA350902349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66380a5422c33983405a8167a6e366649da24a9f38dc19b7557e244e17ff28aa. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/KRA350902345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a35f217c9605bbe9c193f4137ca78964eac47844d82291f61b0406656a120d. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/KRA350902346.