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 0xebae37e7fd33b0aa601b2c02efddaf492db12731eeb61814a479210fab5d7eb1. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db6a4a36-f357-4949-b05f-9c256b240142.json and https://artists.proofprofile.net/proofs/artist/db6a4a36-f357-4949-b05f-9c256b240142.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 0x7da658cea4801f20db0c7dea2f41e75cd4f2577e0c133cd5645ca2af2e1eadc7. 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/TWT952300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a63225f90a5e1586bc9acaf72a4e2449069878942f79a5371aa910212f893e. 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/TWT952300052.
愛袂離開 (民視八點檔《市井豪門》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b180171f8e0acf210e313a96d5e009dbec77cd291a2d5d9872d60dd930ac9. 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/TWT952300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f3a23e5b1066556d7e30813d30cce469f70d9adfabcc295f0028ecbc1e9742. 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/TWT952300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6e54cd41206439e81acd05780c0d2b012f8cb1cbe59fd827cfd4d419dbd492. 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/TWT952300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcf7ecd99071073e1794bbb823759178700b2687962dd3a829132784d699292. 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/TWT952300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955b9a6858d226671f31fbcfc18fab81eae4521770b592b6a623006376f31a34. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TWT952300053.
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 0x1657efa39b1c4a05b553fddd148123a82843ab0946f0ea2bde452de31cd2eb2e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:31:02Z), 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/TWT952200012.
花開花謝 (民視八點檔《黃金歲月》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf300195376d1721d5d1f4f20cb18d81ce93a9f616b3710947e496b445c9094c5. 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/TWT952200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15086d3c987d745120532db969d95490d616bfe0480f5bc9b024e7d3a947948. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:21:35Z), 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/TWT952200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dcf23a490e549c7056fa2337778bb3d41cf38d50b6bbb22069fede71a039c0. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TWT952200015.
心內有你是幸福 (民視八點檔《多情城市》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96747b8184c657492c6fabfbf94aa409280c25b9da1333eaae27d0f157f0a461. 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/TWT952100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fe8da7d7f2a1a29bf73280d60fd04cdb2b86c2c628b27abca8735122d92b2b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:31:58Z), 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/TWT952100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ebf0356090bb21a770d5641e0cb95f44451a205fe40a2f3cc5d82fe7626228. 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/TWT952100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb33ecd7d2f5999286213aeb9d1fb5dff0ed35fadf2bfd6ee76fd84bf7d422c2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:30:18Z), 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/TWT952100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c75dcce49919b92d109887db6aae1658d609658b95632b8bf81976e1a932f78. 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/TWT952100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172c2477ae40f5baa15f0943643727d036fc579c8cc74607f66e3e0558d115fa. 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/TWT952100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f81fd78c8641f9c2140ddba494144b95205c6d43d4fda88aa6602f8b9a853b1. 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/TWT952100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa6cc1572b24fb4f1c0848e157fd9d6ca82b1fde090c0113d8f66fd6c6b269. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:05Z), 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/TWT952100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17812e3e822525efd00ec9289d83dbabff0d84e99a3dfbc9353b1dded91554. 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/TWT952100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10e7144a480d73b552ba0b57cadae104dfd148102f60b1e7e58375189b0ab4b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TWT952100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f2b21d90588890b06f1dafb85db1e5172c6b8808980becbf2a0bb16d345b55. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TWT952100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c022d784948d9cfee42d17c9ad028ebe91f9ce27361d4090a4cfedc7c1ed8d. 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/TWT952300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3491a04289b3b2af533d27acd50cddcb908db39c15da5ce22d55ad5ceb80e310. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWT952300003.
醉萬年 (台視八點檔《美麗人生》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51b39a4ed8da317734c2998eeb85b942487b7aaa92f79c4d5d2a888d4a60764. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TWT952300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bd8d13a875c875227ede22ecd7937f10109cc930e861aa6774393b5924980a. 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/TWT952400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c568c5d263ae3f64f503d9f7907c36dc8e4d5f484bff8d9e256a497eb043413. 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/TWT952400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca7a47f117350547c14e2f5cce0c6c1cec1720f0246113cf3f89fabba790b2c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWT952400001.
心像冬天 (台視八點檔《追分成功》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4926dd3305a2aafe18a1f0ad0a69b3c8a95f27739c00fca9c3c6e470a44070b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TWT952400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1f944abfbc66790b98a05b5b1a18d753072e6fce0a24a27737038a52f506ed. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWT952400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06749ce23780327a6be9e738979300159365601f419c6f94307038bfe7d6cd. 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/TWT952400009.
後世人 (台視八點檔《追分成功》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b175007e52a8e9b05628c78f5c62c94de6f21fb89ced0e4052d21acb5b94fa. 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/TWT952400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068cf2f00c00faab843c1801e681cc18f2698e36bb8863a6266a49e621984385. 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/TWT952400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed2b16160dd856d5342f34264b8d6f3b7a2202e72ce5fc58a1cd0cc99ab2789. 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/TWT952400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd605286768824764ed2fa2c45f915c613df8eb6637c2157a560bcb50bce56300. 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/TWT952400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2883429fc897e2e6886057f3785688a9d10eb28d63ba4b07ab3d5080da7070. 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/TWT952400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc322341581f73804aa896123e175ab3caea5587257bd7c58bfa0604e9cd41ee1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWT952400026.