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 0x57a1200583ac052802a1dab876fa9fc5866e2b3b7011ffc0e58ee287224f2ce0. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d430772-186c-4559-bf53-7ac011e2b303.json and https://artists.proofprofile.net/proofs/artist/1d430772-186c-4559-bf53-7ac011e2b303.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
《仙劍·夢圓集》——仙劍奇俠傳歷代主題曲音樂集
横刀断浪 (游戏《剑网3》刀宗门派主题曲)
横刀断浪 - 游戏《剑网3》刀宗门派主题曲
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 0x4e50009e4f64a4fdac35e7a4565952c862e97d9e0cf42cd60f1cbf85e8fb2b1a. 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/DGA052231204.
横刀断浪 - 游戏《剑网3》刀宗门派主题曲伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee35fed48c7b0c604fd9b815a42047a5ff80b47394fbba9d653085dd5d69695. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DGA052231205.
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 0xf9307cc17f5134dcfb7b22af5652ba378fa87233c9c819212a6aaf99f2845313. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG731622450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7c8277ba089dae256ea5cfaeb2bdbb4e40cabd57fb9860777b5ba6d73a57bd. 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/HKG732242823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70618fd177b7f4c9a91e3345eeca1cc491e6e2871e16520c5d03c162144cd55f. 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/HKG732297585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd9dc475a96e7f4add606b3a2655a0c09aba434db78c314dcbe71408ae2f83. 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/CNZ501700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0069b95ca28ebf6b114f1042b2115dbaed82e3c7b96759496f326b3113939ab. 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/HKG732251387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba37bd897e8236d2319c1da53ffe6fedc1bb16e8f35219ba341f349b8027eb3. 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/HKG732251388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f76c4eda514d11862b66e0305989a95b27654a7b17006ab88a37c0b2d2b43a0. 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/HKG732251390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e7f05d4947348ce74d1b4e9f3d758c8a71275a463e3d72f024f8bbf211d908. 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/HKG732251393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06944a2b65d4ad22dee4517f859934dfa50969a41a3903dc513815325ca7bc74. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/HKG732251395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1832b420cc3b6c5c539abac38cbbab2af69f38f732a79ccba7aede653e93f20a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732251398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1665a6f6e452e199e4abd0291977c44390271c25b1140e7cd84a00b019af7909. 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/HKG732251407.
“雨歇谣”《盗墓笔记》八一七稻米节特别定制专辑
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cc1cf526503327445e3ec48e553e0c094e2438ddfd090e1a6be9ff184c9818. 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/HKG732242871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eba743d466f5bb71cc9b1be4652f94411404125ab4f7362ef642fcfe732ed3. 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/HKG732242872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a055c3abe6d469d44fc93335dc3f5d15acd1c7d38057fef1f7b436e3cdec7a9. 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/HKG732242873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcf847110cc3273fdc06d59b93ca0badd664a78733bfbe53ff03800584a42f2. 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/HKG732242876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf43822b1074ceda1d7fddaef5fd8cf965f54c5834e3012f0a9a821030c09a9e. 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/HKG732343560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10989c1bbdc82a0bf39e144fe83537edd2c1693147c6cd6d1ddbf1af76943c8. 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/HKG732258631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36875e583aac112947de2b4222d0b7934890609bf30c576ab4b7b625b262233. 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/TWD252152498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5fa95741b575187fb7aed4ad3fa52d43270059ed89df77cd92de7868da512. 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/HKG731627289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a896b53ad22503f43bcba7d9b6dbb6d6d8800f0fc4ba2f0bef5320bab709e04. 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/HKG731624769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70a0ccd67a25f8770b321126d86321b67367319ce7daf44f36e4c4dcbde9f1e. 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/HKG731624770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645395d86c645dd96a22dcf05bf53f1afac22a14f24b95b1af6b4e62022bab7e. 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/HKG731624771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4b6bc73d770d503d1d3ba2f1b0e0376200d24129e8b904c27f625e2080c33d. 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/HKG732287565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cd9ed177f6743709a0196fa2aeb38d9117e49aaecd6a371117cedffd0fbc25. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKG732287566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef79b0593a521fe9be0e3b9e0d2365ebdfc6e440fd291f275bb0c31201d2f1d. 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/HKG732287567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed980f6f55ab5e41b5272926d81f1df3d203fcff78ce1e44cd2296a31c661313. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/HKG732287568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7865dfafa7abd8a67bca84e909c97a7367d3e2e7d5a54e46639597fea939a5. 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/FR10S2089453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d75fd8b90641276bbeee940a73f33c24c1a7f22778aedaf84c57f9164bce181. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR10S2089456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6911f8c2d5e6b13a4d8a2bd2649d99ef69710662e585286c72c3f44dc119fd2b. 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/HKG731684612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a291b67d8a1a85d5f3545600298d20b542dfde06cfa0993bde7b7aab6334912. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/HKG732205658.