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 0xae4103269e2cac7d0a78603a3ec7679a44f23131d3d5e72593d14fde57503e82. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cab2b926-4706-42a9-b2d1-5ab62b2dc4f1.json and https://artists.proofprofile.net/proofs/artist/cab2b926-4706-42a9-b2d1-5ab62b2dc4f1.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 0x0d1227a0a216a2d84342f83b9327aae43928c0d8a21d82a2c41317a508ed1e0f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKE058800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d9f172b57bb3b0abed89f1749fd3fb16d2194440f13a309a6dbc21b9dd83fa. 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/HKE059928504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a4e8a83fddde190e6cef3da2395405556ba90816c527e0a2fed2f23d400e1c. 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/HKE058302108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705125119cadeb0e735ac29f741de049bb1b37cb5e6fa071522768a370cc13c. 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/HKE058402105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2a3d6062f4f812e71e2942c06e1bb26c1f38032d556ed750d21256f16e5d4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKE059928512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b22332f8d2b8605f2b0e018c8dd0b94871ab945e521bea05e2012f98da80c7. 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/HKE059400002.
魔法咕嚕咕嚕 - 動畫﹕咕嚕咕嚕魔法陣 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc652badde01ebc456f85a246dc6424862404544c28f64608e54ef60783e8f1e4. 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/HKE050030807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9dfd953145ae37283278a0e8f5e28c068531fbf9abb11119b6e067482f4b80. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKE059929502.
我係小忌廉 - 動畫﹕我係小忌廉 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc114db777eeebf6bd0a6c9da1b2d4af2b28dec14d63707c0802da61715e72. 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/HKE059928507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92b39e3b1dac70887312b790546b6a1d7c7b606212de24437d294855363ab73. 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/HKE050031115.
皇家雙妹嘜 - 動畫﹕皇家雙妹嘜 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562021641fe937ac4fe59366a2e0020a28a3f17136c71d6df2b68f28c8b86116. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKE050030816.
愛心一百次 - 動畫﹕飛天少女豬事丁 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87be6734d1425b53f44d4c6c4d30e065f92513bf71797c9a7512e629325c5794. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKE059928516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1227a0a216a2d84342f83b9327aae43928c0d8a21d82a2c41317a508ed1e0f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKE058800001.
每點愛都記住 - 動畫﹕娛樂金魚眼 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68be511f76229a018a39e7558405b65183b1ad726d5ac0b6cb27eaee572601e. 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/HKE059400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b73dd188458568f749fd937fc193018ebbedbbdabe413fe7adbe6e2da8ae793. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-21T17:02:29Z), 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/HKE050030815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb10e265689bb7759928a97eb4184da668765693e4b436c84c811b4afea80c08. 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/HKE059928514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71a34737bc85643f4c82e0057de6f3b6ef443519d33b4f89d3fd6e622e0416. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKE059928503.
伏魔小王子 - 動畫﹕伏魔小王子 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c01fd5b842e0a11dfcf995f486e09c053edcff825c1fdf8a66dc52134e9400a. 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/HKE059424106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7853dc4ccc12ec8a4eb73aae145e593b331705a36461f479968e992e72ded28. 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/HKE050030803.
小丸子的心事 - 動畫﹕櫻桃小丸子 片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e1fd02d2e9d99e88fd797483569e7e5380a9abee8e0613867db0ba0c86cad6. 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/HKE059700001.
彈珠人的愛心炸彈 - 動畫﹕BomBom 彈珠人 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027a4f53a31bb92656c036c1324fc3b6a4b450514e2dd9f20140bce908b49022. 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/HKE059929512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56753614a9f6b28830a9939d200fd18423803207a292483cc24248d44d044628. 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/HKE058402112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2a3d6062f4f812e71e2942c06e1bb26c1f38032d556ed750d21256f16e5d4. 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/HKE059928512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5710e04ae8574a069ff8db8b87752d4fc3c850d7d1aa2fd0ad382ba381341ac2. 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/HKE058304111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dd473c0486ec66e06d2e09f4e8f7e34a18c2016192ad28c3c490344f89355f. 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/HKE058302102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef44630b895f4c2b78f08ccf5bfa0f28d852588d3e7ba4dff314d76d66b91ca7. 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/HKE058402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb850624e86d2343b41c19848223d9703df9955e5b4a67a6ac05c22a95146c7b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKE051400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437b4ec4631f8c4082a37afa639ec3fc86786295732b076f7c97cbd33c831b45. 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/HKE050502210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68be511f76229a018a39e7558405b65183b1ad726d5ac0b6cb27eaee572601e. 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/HKE059400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a4e8a83fddde190e6cef3da2395405556ba90816c527e0a2fed2f23d400e1c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKE058302108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705125119cadeb0e735ac29f741de049bb1b37cb5e6fa071522768a370cc13c. 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/HKE058402105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46dca8c6d7eaec76407e8d0b34721cdbe43757f1205fe7983de0ef86d8cf329. 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/HKE058402113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b2a069d5b849bf42c14a5c26321031ecb3a25bb1f2f2b630058b009468a82. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/HKE059928515.
願妳知我心 - 電視劇: 絕代雙驕 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbced061d5893a8cc767851fda8687aa1b10a707796101e0c6c70a58ccd53b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKE051400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d099294039b6dd035c25004de84c78e5e40e17ec775f2889f1dfb3bc56649e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:40:00Z), 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/HKE051400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecf25650f113e5eb07aa3b10c62804a149e0c6d0d20279e2832490ec4f44b55. 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/HKE051400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04bd8a306321db52790aabd467edca23700af2981550c18e5804fb6f808e436. 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/HKE051400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa27c5f534a9e432253eb6a791eebe505a409242200045c1d622c9d6dba191. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T17:38:35Z), 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/HKE050800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9668829874c9618f257b5e006f357d98771ac59efcaec6733ac4c9f1de5349. 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/HKE051400031.
無言亦可相傾訴 - 電視劇: 奇門鬼谷 插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b47d3f8075cffdbcbc62f6ef02397cb71d7002db56347931853a1eddb870f24. 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/HKE051400032.