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 0x10c18ba1b7ca0b1626f8db223bf0ffbfe805404930542bfe5907ac896482bae3. 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/2a4cdd08-7a59-456d-bd47-745104f43458.json and https://artists.proofprofile.net/proofs/artist/2a4cdd08-7a59-456d-bd47-745104f43458.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
心上悬（《颜心记》影视剧主题曲|影视剧插曲）
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 0x118ba28ef82ed1387f27d789fae001219a43f6c43230ec13a8869a13c33b56d7. 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/CNZ842400325.
心悠悠（《颜心记》影视剧主题曲|影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641793eaedda8c44a99fdc82f82f115d6eeb36af72a79fa5e9d060b980732f1. 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/CNZ842400323.
予心（《颜心记》影视剧主题曲|影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d7c2505a8203f3bfd7377591aa3c6adb5b0211860bbf3048d7ba1116429059. 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/CNZ842400318.
心上书（《颜心记》影视剧主题曲|影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6faa81ab9a3602c422754f2b2cb21ff92e27467a306c27acd002529fe804ba. 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/CNZ842400315.
探心（《颜心记》影视剧主题曲|影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabcc8c74971541658e4b9f7049d4b419460adb0a8825b0e8e71cb6d652f5f34. 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/CNZ842400317.
欢心（《颜心记》影视剧主题曲|影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb51b895008f63656ed7165be1818284b146a0e8f0398d2b88b24a202bfbffbc. 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/CNZ842400319.
予心（《颜心记》影视剧主题曲|影视剧插曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1785be0e98fcaf4d5a75d8a84e9a54c5b632f51226a33bc782fc1f2d514925f8. 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/CNZ842400320.
探心（《颜心记》影视剧主题曲|影视剧插曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c352b231203b99e5dc3615213fdd5fd2c6ee4f9d638bebc0489cd156e9f8a. 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/CNZ842400321.
欢心（《颜心记》影视剧主题曲|影视剧插曲） - 人声伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa227405c52c254cc0fd5d661e9b71d524cbc9f2a39dc83a7b959b15835aab86a. 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/CNZ842400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c23581cd466697e57c6174a3f6aa11394b48c6acb223c94b32bc88cd04c90. 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/HKC371881358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18488bca50904cb4b8b2f811a32394d5fa63c84ed058eb6b5d200cb2281222ca. 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/HKC371884253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b4b14b9f917d2e7184afed9f6a568213118431dc45c02d1a9371918695fe8. 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/HKC371884255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483fe64aec8ebfe3f5e6786f15ab751aba612c9f15a4fc4704e75d4eb2f76a55. 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/HKC371884257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556e216febecb4773d9f7f748a5236aa2ac3f3f97da7cfe9efb5068ba903e6ab. 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/HKC371884258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ba2fb3ab735fec0cfff0097c4acf927532a7d17fe9b9dbba1b531681449916. 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/HKC371884259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32710a3bd6866423919f370a2260b26ee4a1375fbd54f1d83e97085a1a437e2a. 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/HKC371884260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5c3a0784dc4c92fa2835c5963105a4aeb147d4a0b1bcf9e3fd485a441ec9a6. 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/HKC371884261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d074e01917a117b45cb8c697c4ee8103acba20b3e578de47fd23c314cfd66b. 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/HKC371884263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de7bfe81ab1eb93fa9541ff530f4ec31ead466f73cf311285961d2b8eacf4be. 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/HKC371879253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a04ac8902dd545745f7eec4e55b8f5e401e436505d6b0a25491306b20194d0. 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/HKC371879254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4923912d298865dc9654f29172ed318f1d23a6aa19a80afcc645f725c390908. 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/TWDK51909222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9888c80effcfbd7bbf92c6c8f853fdedeb051dd7921a921ed3e0579fccb57dc6. 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/TWDK51909223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38537e38900be7ecf38076a1b229b598038d5ca581b9f75f19aa088be970161e. 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/HKC371884265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae221d69003c9d8447db85c532213c5c1342109b73521bd6a3666c4a4e60fd31. 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/HKC371757473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b44cb89479c56788d086db47e26e8bcdb09881439171443152939bdc5dc1bca. 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/HKC371757474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf226016d9aee1dcce206855fc6f5b9d29c30c54d86d0aaff662cb9633e885de9. 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/HKG732275975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de7bfe81ab1eb93fa9541ff530f4ec31ead466f73cf311285961d2b8eacf4be. 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/HKC371879253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c23581cd466697e57c6174a3f6aa11394b48c6acb223c94b32bc88cd04c90. 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/HKC371881358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4530e91e41043c807c1f2e2043a540e251387addd072e96eada3ff0d5ab212. 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/HKG731906755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc8ee6843ab9f15e597da546bb7b102cb106c42b72a32237e3d016c405ffe94. 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/HKG731906756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2447f231556d64f2fe29520d9feb59a89e1744486141ba1b56af86f7cf8b89f9. 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/HKG731906757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f2a6abe1649ae88f8f1237de549de7801d4c3e2439229775972b8e37a891a8. 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/HKG731906758.