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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0686d860c9085a1011b609e74be14d08ec53753a8f65711d9bb70bd2a4ab4f7b. 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/894f911b-bf8c-4c75-920a-903d6120de2d.json and https://artists.proofprofile.net/proofs/artist/894f911b-bf8c-4c75-920a-903d6120de2d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10719ec1cda8e9bbdfa6af43241cf67be6d1548d8ab0443f69db37455edfad. 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/TWD252050278.
凡塵（伴奏） - 電視劇《成化十四年》片尾曲（伴奏）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6f1bfbc473a3deb430c86fe7c3851bc816a2eab63c1bd580ee5f9fd778f00. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TWD252050279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a09a8ec6a1da4c7323385a522c533c29c2e0c9f32eb37263eae40085d66134. 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/TWD251753921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018f3c30970b41f0302a8979fcf78302fe3882eda6c2de634ad638e1ef511066. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TWD251753922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d16a7da2ef60f998cfad1117e7424cda92ee5ea6bd74195017622334ffb685. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TWU712102377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895a902b7499300dade2b7fd11280b57f5516604a3a7c6cf5691f09e5f11425b. 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/TWU712102379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cb55eb0e4bcb93efe1ba14672efee4f3b9432b961bf978a9754867e7ac4870. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/TWD252400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a06d5b5863ebb8433358eb583257f18a34b8a1cb34b500e8c18f2a5bafde81. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TWD252400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dae2c0593f6d5f7c5ee875a3c17766cb57b2e81fed354d45467c6c290dc81d. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/TWD252301121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c83404af54f0f04bef6ac01e3e879d888deb8b1448760b8f090c09869451da. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TWDL72110332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f455b657ebced21afbc088a9b699e7ebccc9c368c61325557e6729af9ae4369. 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/TWDL72110333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279369b6fddf9f9dc4ce4208e2fe6f1e486967dd8e3fa484311f7cef5c75883f. 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/CNE222001328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac1dbb39e81b8ec297dcddfc868fbba3df8f03fb61a1ec6b6a862651b558922. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWDL72017358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2fdccf297354a50a75aa447aafe5c9df559cad3d4402d823119ead3f86254d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TWDL72017126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc176b15bf117853fc6f680d78e78142b46bb4efc86a7ffcf11d04e2a9776f503. 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/TWA472096007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b29fe282a6410783e898ce069014ff8ec538b9d29e15eab635714698b94e42. 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/TWDL72014777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6f92908b83ecbc1c7ad19b0f66dd110e3fecc36fde45c79414e247941b0c6f. 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/TWDL72014778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008822b81c971261e0636fe559150513925ab624fc1d595b21acd57a8fa6602. 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/TWDL72014762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b4abeb185e5be36711e4113dfc1baf74a5c1de4861a17918af121345097ff9. 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/TWD252050610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d97b79747198481615e9f740605b47ddae07e6d04ee2b71f96f2f4e2777025. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TWD252050608.
永遠不分離（動畫電影《星際大逃亡》片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58003cbedea83dc91b0fc674da0c7505fdef4192d9fb49d60230ffb3f59a070. 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/TWD252050392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e6912a885d7bca9ceada569cba550fafbe3b1da57823c5c6e8c7805f4e66d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TWU712001116.
時間停止-電視劇《機器人男友》片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78dc88688b4ed8924574ec27c09a83d224bfce98814dd22e12405eed22aa1af. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWD251950756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605df44ec920418ff0ec04867e2360e7c51acbf2baf8c17269d192b39c3f631. 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/TWD251950192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb7290773123cfa4f573b5325cfa8f9237cae5973c41f16d3017ef532245b7. 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/TWU711803330.
為愛活下去 - 電影《非洲遇見你》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8514cf281c204a2288bc29d3fa46408d869fd4273fe023e4d1c3825aac6a7c. 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/TWD251855121.
新壺中天 - 首場東方文化沉浸式藝術展主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c40d8f3625c23e7088a97fe924816b4ff6a08e305716f7d48b92aea773380. 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/TWD251853831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7e55f93482eebddc5f682f2b4b141d32f0211924cbf428e606eb6e2f664cae. 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/TWD251850641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdfa37b91f9ed00ad5820d2e4837d870e29845621314bac8838f0ecb183fce4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TWD251853941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc036e2a5b0471a1be399c90ccf35e82ad8db5b4de147528ceb91b6f73f0388. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWDL72010318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cc7e3c99d8c0b9e76c96e2dac065186b63fe59b7480f79fd12ce8367ff01c6. 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/TWDL72017008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a2afdaa62e427c3a825c99295522fc927784702b36b3dfba10ac559c2bb6a2. 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/TWDL72017009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4dcfc1041ea41030577adacfe2a42ffb80365bcce80f2b12dd356381e9f94d. 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/TWDK51805251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5b9bf22c0c48ec25024164188062ebc7cbec79456f02496dce77b4b79395f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CNE222000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9dec48ba20f2b90d2701367d3bac4668508ed6bd995efc3c1bbf2d47de164b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TWDK51805252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a152a80e2b0ce7bee794605b2d0053c0fbe2f2fb53b3397ca1c4415300cda8. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/HKA411700059.
The Very Best of Golden Dog: 最佳主題曲, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234dfb17716259b2c6acc489d6cb2e80196148227b329c6f9eb5a81612b471a2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWU711801373.
只為遇見你 (電視劇《只為遇見你》音樂原聲帶)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd48602fff72691ffa11e4e415c5021898827dc642021391416b1b7e6c52f221. 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/TWU711904867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319b33886484359a85bb16462b5ea5a44fab379d21cb68db61508f1fd04e70d0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TWU711801402.