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 0x7c8d6c887b72898ba5b0e4f6da18de16f0361d55d14050b5016981a5c7f2a733. 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/409331de-3c0f-4242-9291-4ced67ee628e.json and https://artists.proofprofile.net/proofs/artist/409331de-3c0f-4242-9291-4ced67ee628e.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 0xc06d2b912f6b5fb2832e179635bc4528cee69047a0982409d170d93207e22964. 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/TWCT52433651.
無人相赴（影視劇《婉婉如夢霄》片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe236c44f8b057ed45bb6082ac481e98509724e5854293c6b588f440075cbf9d5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWCT52433652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e326d2c9e32dcc8e6a1f441a0867ad03ada5a8765ed5e9c34a589b1f1a4525d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWCT52433653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f7c5b295be1a6409607aee37029fb81f52ebc39866ad8a9eba688b3bb5e470. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TWU712202463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ee022bcb12741706f7a9e23f7010988c774ecebb8123977ce1d5cd67ceeb7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TWU712202464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe850755ee948dc1a50009e6436d620ca647d3c9031c231aeca391466b29dac. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TWU712202465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc865ae57e008be61068787a68070dcecedf72cdafdee410d4bb55d486614c. 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/US3DF2123235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8e26de266e77ccfcfe394befcf82521454a7ecc95c76636f64f033b83a2b8c. 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/US3DF2123240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22536814ee5c748882155fdb9fd779b94ecee28495b16882e92268c03b9eb2e4. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/US3DF2123243.
红颜写丹青 (《浮生忆玲珑》手游宣传曲)
红颜写丹青 - 《浮生忆玲珑》手游宣传曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca53b25a5322cf72068ca1f8704c9c8708f7302f33a9ceb3b0b9f7cf62c6bb8. 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/FR10S2470204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0514fbc11bba3e6cb8b15609a0114385acc5ac607d9d7decef3a87a516efa67f. 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/QZZ972339673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d60f30cef9eac626f03dc03705e8f2b88a44ffd17827befc9ee9b98ded2ea63. 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/ESA012362210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab97ad819aeb83f6fe64efb91f605b00bd0f01d65529c6d07579bdf735a6a50. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HKG732296108.
故人不远 (《古剑奇谭木语人》X《古剑奇谭》游戏联动主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a96871e8abb3dcf41b84248ec4bf75beaa232edfdaf68222321660e0ad7b3c. 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/HKG732297522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a70bbe254784de8f262e15294b88efb6f39bf070b886ed80f42d59f35c44bad. 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/HKG732297845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597641613ca99f9f51079106e8e2ddea7487b44d867a244bec3375543b7a1513. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HKG732146204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9b6874e7b82177078d44e486f937de08a737e86713a4653e795f48704ed8e0. 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/CNZ642100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d1b0b2b8e5b01a36154ea8c21fe950d65fcdf5ff5cbb23a42b5c9ad4ebe0b0. 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/TWCT52438626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7db09ceca650fdc547533d2d071ec7e5de74fe4b58ec2b19cb8edd0f0ddffd. 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/TWCT52438628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63189f2e88716f94f4f2f5400063f178ed0cd147d5834240163e976ed6c2540f. 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/HKG732305613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff3204550bbe83f387f80b921330f667f57f286b5de9f5fcfdb7bc5a6c0139. 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/HKG732269172.
百战成诗2023 - 游戏《王者荣耀》113英雄群像献礼歌
百战成诗2023 (游戏《王者荣耀》113英雄群像献礼歌)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11f52604b461fce667907c0580cc217b263c181596870f5d58597d7032244b4. 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/FR10S2382129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0286c85a7528ff6ad2ac638baf11d34b27b4e5a193426028e22b5f4d1815b3. 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/HKG731859213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2461a07c3008125697fc0ab6e53b94adf8d0c169dbecfa15ce04c67f9a189cd3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/TWCT52324694.
百战成诗2023 - ——王者荣耀·113英雄群像献礼歌伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f8c1400293e80ffa89265d15999e53d774a724e1e8a3b5dba8b87abf2e69bc. 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/FR10S2382130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ca4ce91b0fcbca093ec2e987a8413a0f5f83e664c394e3de692e2b4ed60c44. 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/HKG731623568.