Yangbans () is a South Korean indie rock band. They used the band name Jun Bum Sun & the Yangbans () since they debuted in 2014, and changed their name to Yangbans from 2019. They released three studi
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 0x5372f2bff1e300635d3937a009facfc873914b4348e0451c051cde2f62e3028d. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efa2498a-c780-4b90-8438-ab20b73c4fc3.json and https://artists.proofprofile.net/proofs/artist/efa2498a-c780-4b90-8438-ab20b73c4fc3.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 0x63354358afadbb4d1463027bf3db8e39eb7bf4006bc1555492eabea83b78dc91. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KRMIM2432012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d8bfeacd66d26ba3d01ba4c615c4683cd87632a138ab6c01292acba7063176. 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/KRMIM2439996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559e9d5d4b7ffb73d68bfe3f15e2fcc496693fb963a4a951eff033755353c250. 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/KRMIM2439997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6ec2f64482540cebe93bc320023608be8c49ed2a326b6446410742f3e7e1b7. 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/KRMIM2440003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7548ffda6df906e23369229f88d1f287863df3648295fa79794499e9697f2b10. 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/KRNAR1709326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f6246eea6b52a1ec9a6b8e1fd5a6489c2e7779b398d70118daa22d5b94ab9. 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/KRB461600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dd2d85eade200edd4528cbac4d57557086ef567bb67530f47e4fadb59cdd58. 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/KRB461600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac63f67a411a5e7901eb12440d4eefbef987ef1aa99ffc6eea442da248fa585. 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/KRB461600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada1a579fc3f5612aa67a9c988e2861e3678602f8c711c519456a7e644e0f99d. 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/KRB461600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63354358afadbb4d1463027bf3db8e39eb7bf4006bc1555492eabea83b78dc91. 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/KRMIM2432012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579383bb40fa3952c75ace108eacc2587fa02bcea1f6b17b60d0610b13171f30. 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/KRNAR2342050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e84f3fb3d292f43a00d1118c1f990017c9969de5bbb74198e054036a0aa5fb5. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:21Z), 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/KRNAR2342047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d862a7817456a5c6d5605d8b6109247e450c2958f49523f3d1935d132d0d95f. 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/KRMIM2350914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f264df3a7e747a09869b2863cc1838c08f0fbdaeabd3869fa68a321b20436ab. 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/KRMIM2350915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cf07b2a12e3cb5c9986e479ec62304fea80f41f7165f072e333190fa0323b2. 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/KRMIM2350916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e8b6b668fb10dc5dfa7e18f694e6154b6f3f38d16b29e22546389e38cc1a3. 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/KRMIM2350917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78fda77ef16a252466b34ddd974649c91b5beda7116790f679a6ad78fd7e05. 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/KRA252201486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b57adac382871288bea2c2005b89dcbbc9abab88aa90ae2a0058da75e4972d8. 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/KRA252200681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128c4de05a2c0a5aef20c803d5dfda5e43b098d6ef0c89443662c2fa24755bd7. 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/KRMIM1917872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcce5c032118267f02201f727d8f53fdf853b33eebbb9dec2594778e0d40c1c4. 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/KRMIM1813035.