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 0x86af31573a13e1ba34f198718fd495d386f64e58fa5b9d706641a240a62b4674. 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/7f5b353f-d4b8-4e4f-8ca4-e61b62931d9a.json and https://artists.proofprofile.net/proofs/artist/7f5b353f-d4b8-4e4f-8ca4-e61b62931d9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x2d8a66af443f526b8d6f0314bbbb9691a5ed2a9f68ce65d5262b93b83f511175. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2fslBVUTlVx7tQrc9QDlY0.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/2fslBVUTlVx7tQrc9QDlY0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b0a771e949653b55b872fdb68b3ccd098cb1d680446fb5b64f180134be78ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/143OLPfwfOCFmga7vxehUN.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/143OLPfwfOCFmga7vxehUN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650439f77c90f61703b5c0500c8811a5cca3fde56d7d812ede4087985c24090c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5t6LU2gxbS6MsmNgTy28W9.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/5t6LU2gxbS6MsmNgTy28W9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5171aad2e515354d8126a40636ab5d818ee9cc87ac28f4998542bee3ee477255. 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/60NhhbOkyPjFnV7FEnJC1M.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/60NhhbOkyPjFnV7FEnJC1M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b07c232bbb0bf08c329c51a814cb1ec597605d52b2a5b4363ec27e02d779fe7. 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/4SddYBGqrAgayCD0umsCXw.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/4SddYBGqrAgayCD0umsCXw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dfa8efe8f4d2e84441e646985c8c48043b910d15ccdce44dca50547c8866cf. 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/0Vshd372WzRRwlmjbK7MRy.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/0Vshd372WzRRwlmjbK7MRy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7030a888be3cc22985127681783595290599aac975216e8fc5e274d69ed59e20. 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/0ojvxiDHd1jyc50Z2BgCDh.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/0ojvxiDHd1jyc50Z2BgCDh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa160e1333e554aba1d4db39efa9b8532f54e59401a9dcf7e96552f8bd7e3311d. 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/3jRLEWwXEIhfr99f0zykyA.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/3jRLEWwXEIhfr99f0zykyA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cadccd6b5a1dc0d694153f0e6ec5719d4b968199f84b7b6707726c8e3b14b0. 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/6OiZuR9NfezwvcCHU186KM.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/6OiZuR9NfezwvcCHU186KM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8df14e0dd1168cabe3a161b021d9e6a890db179281da402d5f3d0fe9461034. 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/0naxROCV4AjWYi6GsllBNr.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/0naxROCV4AjWYi6GsllBNr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61f6689f6c0eda13134f3df55d5f2cc15c418932fb53ac549fa8c5c14142cad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1GwftGMZE47IQqhRjETuo9.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/1GwftGMZE47IQqhRjETuo9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7981192d8d158cbb71634aed91ee69e3d89561ca613fc195e63f96c6b5cd9c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3keTZREMu7ELGEjgvAsLwU.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/3keTZREMu7ELGEjgvAsLwU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cec6773247bdb542c318ee29d4cd4c0bf9de9d57fc13ea1814ffc6f6b131112. 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/2aqZ3vPdep9wZuXV4TFu6q.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/2aqZ3vPdep9wZuXV4TFu6q.
《琅琊榜之风起长林》电视剧原声带配乐
风起长林（《琅琊榜之风起长林》电视剧片头曲）
萧家（《琅琊榜之风起长林》电视剧主题曲）
风（《琅琊榜之风起长林》电视剧主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65faa21d38ed19cc248ad50361f026165818829aa775e2c28403042221472f1. 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/2nVpURX0FuhE0xIpPPJmYL.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/2nVpURX0FuhE0xIpPPJmYL.
《知否知否应是绿肥红瘦》电视剧原声带
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc24ca8da5bb3ef46bf20316c6223b0535b6fbc0596202350ced52ce45d22bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5P4e0Gc3Vs7exY8L0gPKFE.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/5P4e0Gc3Vs7exY8L0gPKFE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a71d7b310d8690335d1d3c2bba460b372f0a8824eed56e9f309e2fff6407903. 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/7A5FLC3bOcDoj0fODvkTcL.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/7A5FLC3bOcDoj0fODvkTcL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53104db9bd233a47e090d8f2558524b0cf1d3f8e183c6a25ec2e2660b8b1f9db. 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/66AnP8PEVrEbVTTqWNWHAG.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/66AnP8PEVrEbVTTqWNWHAG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf2aff1753c7e27566774ee254d92095f62c4450333430ff27c8999ab88fd52. 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/6u8iLIT9SyPX1n5bthegt4.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/6u8iLIT9SyPX1n5bthegt4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3db761fffb5d21db6dd32bdb84d4f7311de6655403c6802bc46d81f8236d6ee. 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/10wvn1sFaDJJ2jI86egfCI.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/10wvn1sFaDJJ2jI86egfCI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df9092adc8c50c98f8728cdcf7afb34f17bacfb85295dac98406fa3afdd2a58. 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/227JD0o6GvTPdC0Ps4qtCy.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/227JD0o6GvTPdC0Ps4qtCy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258ef25604cf0df324211caf826247927d463c14ca3a39066c301bc073f2b25. 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/75U88pfPMhXEdZLN7uZJB0.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/75U88pfPMhXEdZLN7uZJB0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7941b27616533e441ea0e264381929fde37a9a65989d4b8df14e82523d6a2c. 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/33IAou7P0FhnqJFjgIddsV.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/33IAou7P0FhnqJFjgIddsV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfc84ec2ec11ea81d34ac6b1b9e18f155d969a3d377c9a21068d8e521402cd9. 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/538AUGt0BKa5Fjs8nmCsas.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/538AUGt0BKa5Fjs8nmCsas.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0594d4f72f98733375b4f31c383bebc5d25fabcfda817784deecd4fbb311879. 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/635cLUSh458AOxtvbAnp6h.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/635cLUSh458AOxtvbAnp6h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4891d60736fae73aca1b8e88fd7e28407a06a10b776928dfd89a8a773b19aab. 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/3E95pVNhXLIq5I9AdfnhMK.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/3E95pVNhXLIq5I9AdfnhMK.
{"copyright_id":"0xb0900f7c98f08b1f38476e47c4dadc90b4b285be4af97349d8d0240b9e3ea9a5","isrc":"QZXLZ2305897","name":"I See Us - 《欢迎光临》电视剧主题曲","registered_at":"2026-06-20T11:23:13Z","spotify_id":"3Ieo6QVXEOxjzgOydRaJQZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0900f7c98f08b1f38476e47c4dadc90b4b285be4af97349d8d0240b9e3ea9a5. 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/3Ieo6QVXEOxjzgOydRaJQZ.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/3Ieo6QVXEOxjzgOydRaJQZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dce1eed083b809101200e93284eee7503d11c6c45709b0c3148634bd61cbd94. 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/3cAHNgcQIEnSzikRlCWF42.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/3cAHNgcQIEnSzikRlCWF42.
{"copyright_id":"0xb5a6bf6da851265492d670413ffb3afe89ea02d0e7e0f84dd8d483749cecc902","isrc":"TWU712206550","name":"I See Us (電視劇《歡迎光臨》主題曲)","registered_at":"2026-06-23T14:17:42Z","spotify_id":"3oE1hNRLZhxnyFUt1Csd0Q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a6bf6da851265492d670413ffb3afe89ea02d0e7e0f84dd8d483749cecc902. 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/3oE1hNRLZhxnyFUt1Csd0Q.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/3oE1hNRLZhxnyFUt1Csd0Q.