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 0x46714591f48a5bb6f6aed83f60e3eb73b05c8c4bacf9d6f0266f08f4a0f8ba6d. 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/06fbbc47-0a73-41ad-805a-f758aabad45a.json and https://artists.proofprofile.net/proofs/artist/06fbbc47-0a73-41ad-805a-f758aabad45a.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 0x199b736de8472df92db6b05f1fcb6995f9a26326bbc7513fa91178402206a3fb. 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/HKUM71000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221d641cc50cc608c6995f9449d87aad037d8b161451276d0983f6aa98946eaa. 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/HKUM72200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221d641cc50cc608c6995f9449d87aad037d8b161451276d0983f6aa98946eaa. 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/HKUM72200404.
遲了悔改 - ViuTV電視劇《太平紋身店》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cd60ee8366410c44da853bb05786644eef056c13d4926a162c3de09747baf2. 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/HKUM72000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8d113d56d85e37027803b8034805cb8c4a31ffaf649cfc6830f6d174b7dd62. 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/HKJ342300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ea24fda1d88999124ca9d12fd92f27740d88c0bc28e04e4fcb83224fbfce90. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKJ342000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16e33fc62492df8c1c04b142b3ca4065a1efdcd9dee1ea07ac24a92e7c529a0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKJ341900013.
日夜顛倒的主角（劇集《麻辣商驕》主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788731bf2f55427e0f40fde3c512164bb80dca80b0bde7d1a0abdc7ac9c2cdab. 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/HKJ342500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cabcff7c1b83d257a7e8a4365cf2b04712e83832358af2bb2ebf41b905638ca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKJ342400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2e57222a38a60d3ebc6fb4adabe07eb09f42706146b789860113b910528407. 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/HKJ342150032.
想跟你好好道別我怕來不及 (劇集《香港人在北京》片尾曲)
想跟你好好道別我怕來不及 - 劇集《香港人在北京》片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc496c3a193a5781ab7873d0ef187e0ee603fbc437aed58734a5ae53a117f01. 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/HKJ342300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7490da3308e40bfea5b1daf30e8f3d3ddaedb826485e16a87a8e8b67f0dca. 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/HKJ342350035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71527f79b32684b9e1443cadc3c423fe8e5b6d47addf2e300772ef62e3db25c5. 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/HKJ342350019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd284e885fbfd305f5300c2ac9f621ea6b28c4840308613b4bc8d8455220f8b. 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/HKJ342350014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a898e5fcec57d6d88ef4fb2e50f606653b42f62be97b1f9a7bd265ca253b8d1. 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/HKJ342100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb56fc071bef45e337d8e98ddc1ba8c5ffb298d9e87ae48367c2d27c4065add. 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/HKUM72100323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc02386247b98826956de99727f706b6a66965c9d4fea0927cc4e9f5f0a9560. 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/HKJ341900071.
分分鐘需要你 (Sad Version) [劇集 “十八年後的終極告白” 插曲]
分分鐘需要你 (Sad Version) - 劇集 “十八年後的終極告白” 插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1651f521dbcb8df4826c61bf7c083510f93e098060071d55e6e037232c1b44a. 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/HKJ341800049.
分分鐘需要你 (Happy Version) [劇集 “十八年後的終極告白” 插曲]
分分鐘需要你 (Happy Version) - 劇集 “十八年後的終極告白” 插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a9a8baffd39d41b54bc5ca28d8c97c93d49a11612b0fef694598aa17eed97. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKJ341800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65721aeed603d91d335e3953658b8a38acd5e0f8bb0b50320f7b6f0a8cc80e12. 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/HKJ341800056.
你知不知道 (劇集 "知否知否應是綠肥紅瘦" 主題曲)
你知不知道 - 劇集 "知否知否應是綠肥紅瘦" 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077d7c59aa63e5d87ce2c52c1ee7bc6b4c806850a8bf62fe630753592ef5286e. 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/HKJ341900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4690bd6a110269d0f178c69671068f80b8011d979f2adc95f3c8cd87643e38. 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/HKJ341850014.
未開始的故事 (劇集 "愛情沒有來的時候" 主題曲)
未開始的故事 - 劇集 "愛情沒有來的時候" 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b0f2a73bdf1599bef24eafbb326d271a39fa01eb80b06232f008a9fb0aee47. 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/HKJ341800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7103ae4bb4c7520f6df6501c1b1b7ac6fd365cf714f0cd2d6f3c9b44271c2998. 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/HKJ342400040.