1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd81a04df098c0a2d20f4ac0d1bb4c2e4faa0378baf8ce26c2a20a080980d9bfc. 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/14b48fad-1fa8-41c7-be5a-6cab57e5de1f.json and https://artists.proofprofile.net/proofs/artist/14b48fad-1fa8-41c7-be5a-6cab57e5de1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf5f2b971b02ff40ab4bfb0baa31486cb6d7eaaac99c1b19e6dad4012ef2c2f63","isrc":"KRA381210137","name":"My Tipsy Confession","registered_at":"2026-06-08T01:50:37Z","spotify_id":"62ElSn0docGvjnA7k30swo","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f2b971b02ff40ab4bfb0baa31486cb6d7eaaac99c1b19e6dad4012ef2c2f63. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/62ElSn0docGvjnA7k30swo.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/62ElSn0docGvjnA7k30swo.
Grand Opening + Saying That I Love You + Should I Say It One More Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643420cb79bcd436cdf69888d8dcae3ef19edb8307857b30fd6336039095102. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6AiECVVjgQxarxardXEmgx.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6AiECVVjgQxarxardXEmgx.
{"copyright_id":"0xce110ac8c27181c5a459f3f2934be894da93ff0edc0e74d4f6f7c82132ef18ab","isrc":"KRA381210117","name":"Miracle (Feat. Lee Soeun)","registered_at":"2026-06-23T01:18:17Z","spotify_id":"55IUcFVyNyD9J76cDW1u3S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce110ac8c27181c5a459f3f2934be894da93ff0edc0e74d4f6f7c82132ef18ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/55IUcFVyNyD9J76cDW1u3S.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/55IUcFVyNyD9J76cDW1u3S.
Watching You Leave (feat. Song Younghoon)
{"copyright_id":"0x5b23afea068ce65aea38bd7d5e3c3755b34f3fd3992b0887d5f28ed522650f5a","isrc":"KRA381210142","name":"Etude Of Memoirs","registered_at":"2026-06-20T03:12:14Z","spotify_id":"76QFuMyMJ1xzjkXr11HnRM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b23afea068ce65aea38bd7d5e3c3755b34f3fd3992b0887d5f28ed522650f5a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/76QFuMyMJ1xzjkXr11HnRM.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/76QFuMyMJ1xzjkXr11HnRM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9155e7c7a7a92480a62c4cca89c7ff7e127188bd7338a2932b28cae82058249c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1JdMeBH2CkX8pzj6FbMwUS.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1JdMeBH2CkX8pzj6FbMwUS.
The Way We Live In This World (feat. Friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e08e8934f5220ff8b0bbd14a2adeb4fca2b8688750845d643a36220f18707e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6goBSQ12dgBRhEQQrC8LQ9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6goBSQ12dgBRhEQQrC8LQ9.
KIMDONGRYUL LIVE 2012 Gratitude / 2014 Walking With
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58edb84066128b56147fd168bbb33010302379b2e3869315528488249e59a7e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5czlrK1Z4KgBHDAyg8gofQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5czlrK1Z4KgBHDAyg8gofQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29b9bd3846ec5c36664f75ed8c7f42a2ae5a1d95170daea6616800233253c0c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Im4uYrUiy0WesUBHiaHl6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4Im4uYrUiy0WesUBHiaHl6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd06a67c633fe2e291363a9aa9102602d1da72534e142578699218432fabb6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0hS75ynJnqHZmMusLgYnbi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0hS75ynJnqHZmMusLgYnbi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8b9f0f735a48ade168dbee6c23229ba1453b58a7a36380956b04a241cb882c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7fv8phBAJlKlc4MZaV1zuN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7fv8phBAJlKlc4MZaV1zuN.
Although We Say I Love You (feat. Leesora)
Brink of Summer (feat. Julius-Jeongwon Kim) (2021 Remastered)
Although We Say I Love You (feat. Lee Sora) (2021 Remastered)
Youthful Days (Feat. Lee Sangsoon) (2021 Remastered)
Advice (feat. John Park) (2021 Remastered)
New Beginnings (feat. Park Saebyul) (2021 Remastered)
The Way We Live In This World (feat. Friends) (2021 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d4615813dc3509a95719e51be05073045f349a9050d858bff128fb4f2303b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0NfwPG9B35UDgmZds7Q42N.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0NfwPG9B35UDgmZds7Q42N.