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 0xf30c8ae59c5f7227bbed50c00c1b92a8c423cb01dc37f87a01f96330a8a26251. 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/05046025-8054-4854-ad86-a1025f03a8d4.json and https://artists.proofprofile.net/proofs/artist/05046025-8054-4854-ad86-a1025f03a8d4.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 0x9f7cbd7f43656f99019d7eb92c6a8cc83ec9054055082e79f93e228f644b160f. 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/2lQImda0FShL0LOIBiVfxj.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/2lQImda0FShL0LOIBiVfxj.
你猜我猜不猜 (电影《心理罪》猜心推广曲)
你猜我猜不猜 - 电影《心理罪》猜心推广曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4187a8f78ddbc83480021974d08ebb126db2f2d3a6c4203a7f0f8afeecac1a8c. 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/6yTcc13v7rR5QZe0EV5YTX.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/6yTcc13v7rR5QZe0EV5YTX.
天龙十二门 (《天龙八部》手游两周年度主题曲)
天龙十二门 - 《天龙八部》手游两周年度主题曲
Mình Kể Nhau Nghe (feat. Đinh Trang, CM1X)
Mình Kể Nhau Nghe (feat. Đinh Trang, CM1X) - Beat
Khi Tình Yêu Đến (feat. Đinh Trang, CM1X, Tempo G)
Khi Tình Yêu Đến (feat. Đinh Trang, CM1X, Tempo G) - Beat
猎手（《尘封十三载》影视剧主题曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1737864828f1fd94cdd2cb63f85c28993857cab2f378e3046d44a2c40f46c22f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6DqJdFJRFzbpADHwJ5vrSH.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/6DqJdFJRFzbpADHwJ5vrSH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ec76710e0bc46e476790a47f05fec833fdd52736583e022afff6b08130f6b7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ndzmGtOM5i5ioYpaqiUyM.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/4ndzmGtOM5i5ioYpaqiUyM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28009ef7287c4035e793d22a502364beade1b2262836816a973fc563505a6df. 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/2ZIqwV8sadS3dVn5W4hhrE.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/2ZIqwV8sadS3dVn5W4hhrE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f28717075c86d4ea1c65b2563d0d9426765b3333dd77296adad1dbd9b8bf00. 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/5ZY0M8ZFEpUmtLC2viNpii.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/5ZY0M8ZFEpUmtLC2viNpii.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3cfabb4302b1148ac219a08b1140338e92b92e390bc58602f506c80199a46. 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/4qgP6FI78qJIoqqA09ZgNr.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/4qgP6FI78qJIoqqA09ZgNr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f876c25351587ac470acad1828db8d0d57669051860862fa4244ee0ed9d5ac. 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/46JpCxI8UwqPDJnuYYrCny.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/46JpCxI8UwqPDJnuYYrCny.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f068aac5e47c0f12ebd75fd36a5bb4deb52c67e637caf3903c278b3d9d6f007. 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/0Jid7V0bYCcDptR6kQDd3l.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/0Jid7V0bYCcDptR6kQDd3l.
{"copyright_id":"0x6e049c5799b42eebc09f841a354644da4d9a6e1f7078c668a5c07f0ec08c10d3","isrc":"HKD012301173","name":"麒麟 x 沧海一声笑 (Remix) - Live - Remix|Live","registered_at":"2026-06-09T17:37:11Z","spotify_id":"1hrInu5Y807BNW8lMctgoc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e049c5799b42eebc09f841a354644da4d9a6e1f7078c668a5c07f0ec08c10d3. 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/1hrInu5Y807BNW8lMctgoc.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/1hrInu5Y807BNW8lMctgoc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb884a937097f8c3356b713b4a204a7c9a9cbee5be887d1f4272516402f2432. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:31:40Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/07EHg5h4NRCggImugXGqI7.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/07EHg5h4NRCggImugXGqI7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cdafd719c25624dd95c2a9a1f6ab5e7f0f1ae566b7df781cc70b7cf2b67108. 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/4DDLZ2r9YwlnW77Qa2bpMf.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/4DDLZ2r9YwlnW77Qa2bpMf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b11ebe5679b297d2e98fa53c56abb0cca6e0c7d1707e582f71d8dd1265034a. 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/6IrMMDsJ9aYHkpJ8FZgAhs.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/6IrMMDsJ9aYHkpJ8FZgAhs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78738de34cb865e52be7a25b205af5f4674238afd652fdbe603d9f275bdfe2c9. 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/3KZGfYOlprxyvBW459LQV2.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/3KZGfYOlprxyvBW459LQV2.
差不多先生 / Brother Man / 爱就爱了 / 沧海一声笑 / 哥哥在哪？
{"copyright_id":"0x0e501c93a00d0682cddcc947ace6be502a6d26ccbdc3be757ce4af9919fd78ee","isrc":"FR96X2219277","name":"差不多先生 / Brother Man / 爱就爱了 / 沧海一声笑 / 哥哥在哪？","registered_at":"2026-06-21T04:36:56Z","spotify_id":"24jzLOcSu2OzzMvlVi9CRi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e501c93a00d0682cddcc947ace6be502a6d26ccbdc3be757ce4af9919fd78ee. 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/24jzLOcSu2OzzMvlVi9CRi.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/24jzLOcSu2OzzMvlVi9CRi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047fa4a33e9770021c79effb776aecaf835f091e1536c153a44dae344ffe5e8c. 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/5c8D5arMqfwBiEeXSr1D1R.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/5c8D5arMqfwBiEeXSr1D1R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f77b7b7317a191293fa85005afecaf692641dd2ffbe0686f880a30f596e9a4. 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/5tuGUcE8myK1JoN2jVDMTo.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/5tuGUcE8myK1JoN2jVDMTo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e10608914f5440f8de10f514efe3142783f27d79f049ec972a6ca543ff44c7. 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/4TzCPamrv32BKgMA1fpEjd.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/4TzCPamrv32BKgMA1fpEjd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924871d8219b0846b0c5334af82f60f3b26b86aa70a34957d6c3d50f2bc4f852. 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/1dxEB1hAwajWinPe7YRX9l.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/1dxEB1hAwajWinPe7YRX9l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6beab3bb0763c9d68f9f274312de7b9f3326a8473786f610e710ca7377695de. 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/2UV0Pp4ajn6CnLUZSg189c.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/2UV0Pp4ajn6CnLUZSg189c.