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 0x376ff9448d8c0687e1adc5dfef9ff8f22473b27f9ead71a952b766fe65dd2f66. 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/316b9eab-3e7e-447d-b59c-9a0a2647312c.json and https://artists.proofprofile.net/proofs/artist/316b9eab-3e7e-447d-b59c-9a0a2647312c.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 0xcd4754522b00ddb04588abbf224f529996b977eb5bd43c96b96a5ada068ddf2f. 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/FRX201916186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba26ef19ec5fdf0b62f2445076caa6fdfff85cd41b541cea4f49154e10693ca. 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/FRX201916187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669ed4abc1f57fa1224e3e528373186f71254e1821013f36a50cf0024da3aed0. 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/HKG732342933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a6f25aad3bd25e974b084db18530fc57fd04bbcf64ddfc11155c5c6e85c1a9. 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/DGA0Q2302815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb514fa98dc2c86bbcb2fe2f7a061006711900b583189200c10591f877694c999. 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/DGA0H2389024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fabbfe916172a749ab71a1698e0dc6c16fc8d4076c10c3b81b8a30815782fc8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DGA0H2389025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba276c448aaf6f81ef2179483b69c8f48c9a81673270a7bd9a29a5e44d62dd3d. 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/DGA082296449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeb757e21ef7a025d641cb2c06aebfbc4c298c01ca22e5a43b90a5b225adda2. 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/HKG732292153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a7a881d14f3ec60fdbc97efa8fb38fa1bdcb04067b1c99eed15c0ab8b8efaf. 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/HKG732286090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9f009d7babeb7f8ce96dc0258c15adf6d1871d5d10d658d3fe9bf2e43aff41. 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/HKG732286091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c3039eb411ed83c1822226c50b570699f634ac9fd6ff96e22d6f9612fe01df. 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/HKG732319648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7157eead89a3b99f967a0a573c287201f4d812ba73aeedb106fc1e0e4ebc01c7. 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/HKG731600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ea54aaa641d7cbc83e702848e97ac02aaf6bc92b56d767cb4f293d215e5440. 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/HKG732314567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd681294de3c81ac6bc1e916f22e9d9840f9dfd51cc782c47ec98c2e917916fa5. 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/FRX452227877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a05ad6c6ae8b31bb29794dbda63d1cc058bb822e3dc06fb5f3dbe78c51a12e. 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/HKG732148867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204829acfefe841fb073ba674cbaf5c2896a6c0515be7dd058139f434ec03685. 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/CNZ512100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249af86c5f727df2579b7937f5231960e29cf2d4b575ab81898ddc76a7c0f6cb. 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/CNZ632100852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce79e609c3857659a0d877726b4724fb4cb512e7ac5e90fab8561d76f9c56c9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CNZ632100853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6203a8d95c58c83aa0ea172b083f9326f20f45a68faaf0fd39eed236cafc39b6. 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/FRX202153094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e8640209888abe8b247c9ddf58ac879d5301e8b65bc56f888f938fbe20d88. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/FRX202153095.
有关你们相爱的经过（影视剧《爱上特种兵》插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08a129616be3b0ada07ca82733c5dd25a143ce1c7dc435783b6b71be256267b. 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/HKG732134145.
有关你们相爱的经过（影视剧《爱上特种兵》插曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bde4a91de41f8b9dc902fee69882743f32946f9461de718c1a5fd4bd9062aba. 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/HKG732134146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b606fb7a41d6ead981685971c041de99f01a2df40b167737d01515d72e4d27. 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/FR10S2102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1df8d2d240fc10f3eb8a8bf88e936c9b3b439e7f10c89c5b96fb20a4d34c47. 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/HKG732040897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38eb23ff7716de7b47d1b541de1704b4d643e7acdb2086135b693da585e6566. 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/HKG732024307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a61953769020e7ff5a33b234c2747a75edf6edce2624b6d55d6ee1be2fc5d7. 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/HKG732025986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03b160ee6effab467a228e6f7bbee08ca10ffeb3ff0732c135b640c6f1eeef9. 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/HKG732018913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b19dae313fee1900f4d24cc76c2b34a3a64047d70cb2df8b82e482970097950. 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/CNZ702000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc5f710c82329565f4d3573f68124de983658f32e81127be1fe9abfe0425d3a. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/HKG732010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54536adaf4407cd6c6340625483ff74d9e78dd318bddf220e430b18ebdede39. 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/HKG732460558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29323aa8168c68f4a2a0c724198e3f28b285ade457a19816cb4df8eff40d506. 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/TWDL72206258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98742dbe505294e4b9dbecb5598c43b3ff4b3c83ba44cbd09f94dee6daf769f1. 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/HKG732001861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3335ef99e630a27b4f272a6bb7c534da4b4371fab15f43298f0671906ef64a28. 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/DGA0T2428614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56494d420af4cd720bd82e13b6de01f7f549a451ab197b0d3dc4472a18557b50. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DGA0T2428615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef447a6801123691204773c526f58519aac4a431835d0da8703162e7e869855. 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/QT3T42419141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e64b9ab8c872775311c5a65b47e6cf8fc5d053ff2e63b988889b41fce1050cb. 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/TWU712003352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7701e835111c8aecdf8a1068af0d34f08a48bb957f04d73a1e6e57055a59d38b. 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/HKC992524734.