1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6e02d23ee22ed366fb96053b4509789d97e2b492eadf99e8e744dd2ebbe474a7. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f606946b-612f-4f3b-a8b7-d25b4323ab2a.json and https://artists.proofprofile.net/proofs/artist/f606946b-612f-4f3b-a8b7-d25b4323ab2a.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 → block OTSBitcoinBlock must exist at that height 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 0x8b01350696a5f7e0c0820466e5e8b317bdbbf7060cb79c1c6c0e6a324ad65551. 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/HKD250617005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436a07e3707e5801aa70533b7623a43c778f2d0323d733f7a138a1a72dec5c8f. 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/HKD250617001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfa639dfded6d12e0fa68e36a318ddf3ed297d00e996b0cfd8c4cd80bc8ac3c. 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/HKD250617018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd807ebadaab6f74df7975d887885d8d3097abd072fc67e649174105ea6a8b773. 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/HKD250612104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6177e125d35ae7a1a57481dbead2e15bb10634b32a17d811f0338419a8e004ec. 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/HKD250616603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4a3c52fb51ba4f43d5f4c3adfde0982b846bb705ee4a1678c8882fca40994. 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/HKD250612103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf35ea8821d4c41e72e3b763483e87f11c16c7923eaace7458bf2fdee0d44d9. 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/HKD250618402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa079e2805b186d3a98c68d129acd120ed34287a621e7632cab61ec36be74bd. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/HKD250719705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49e8970c4ccc47cdc8fc99b11be47bf111ec49fd535ed1059ec17b49edf3ee6. 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/HKD250318913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b22332f8d2b8605f2b0e018c8dd0b94871ab945e521bea05e2012f98da80c7. 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/HKE059400002.
魔法咕嚕咕嚕 - 動畫﹕咕嚕咕嚕魔法陣 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc652badde01ebc456f85a246dc6424862404544c28f64608e54ef60783e8f1e4. 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/HKE050030807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9dfd953145ae37283278a0e8f5e28c068531fbf9abb11119b6e067482f4b80. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKE059929502.
我係小忌廉 - 動畫﹕我係小忌廉 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc114db777eeebf6bd0a6c9da1b2d4af2b28dec14d63707c0802da61715e72. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKE059928507.
皇家雙妹嘜 - 動畫﹕皇家雙妹嘜 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562021641fe937ac4fe59366a2e0020a28a3f17136c71d6df2b68f28c8b86116. 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/HKE050030816.
愛心一百次 - 動畫﹕飛天少女豬事丁 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87be6734d1425b53f44d4c6c4d30e065f92513bf71797c9a7512e629325c5794. 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/HKE059928516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1227a0a216a2d84342f83b9327aae43928c0d8a21d82a2c41317a508ed1e0f. 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/HKE058800001.
每點愛都記住 - 動畫﹕娛樂金魚眼 主題曲
伏魔小王子 - 動畫﹕伏魔小王子 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7853dc4ccc12ec8a4eb73aae145e593b331705a36461f479968e992e72ded28. 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/HKE050030803.
小丸子的心事 - 動畫﹕櫻桃小丸子 片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e1fd02d2e9d99e88fd797483569e7e5380a9abee8e0613867db0ba0c86cad6. 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/HKE059700001.
彈珠人的愛心炸彈 - 動畫﹕BomBom 彈珠人 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027a4f53a31bb92656c036c1324fc3b6a4b450514e2dd9f20140bce908b49022. 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/HKE059929512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb850624e86d2343b41c19848223d9703df9955e5b4a67a6ac05c22a95146c7b. 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/HKE051400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437b4ec4631f8c4082a37afa639ec3fc86786295732b076f7c97cbd33c831b45. 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/HKE050502210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b2a069d5b849bf42c14a5c26321031ecb3a25bb1f2f2b630058b009468a82. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/HKE059928515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079f6fed917458680e9fd3f376fb6ebc17f45eb50de777c954b6ded2e754581d. 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/HKE051300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a1ba8d280cd1121b1f1a800cb37f2666294cf192d3547a47a2032c903a5eec. 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/HKE051400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27d9d658e44f40f1a5118d5fb25591c0db6406fba5cc1e27439824dd5668bf. 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/HKE051400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711d159e4e35fb0449c84e9de1f6e5614de4cf2fa64d68838aed7ae0387dd9cd. 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/HKE058502106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fcb382e78a79ca5066dab2b41eb5c471f0e80007c675c3cf8f17f328b6ff00. 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/HKE058402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3db7446aa9d7f893ded73da722ecc44e56f730c5f846b798e3773ba723d45e. 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/HKE058302106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b08a8b61bb824c59ff4f3b166e5abd9b31ddb85cff08ced489c6a89bf94005. 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/HKE059928511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602aeecbbe52a4c0a46a30ca2aaaf24ff8b319518fca2da4acd851f716313d96. 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/HKE059928509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc453a3083dd29bd0c4b8917a86a04d844a8bd4a18e476de51d9d7a84660c7404. 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/HKE058402115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f839e22619725420f6ee2f1796c6d42edf36c4e6bec4e46c88b1cca8ee3c12c. 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/HKE050502228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2318e7ac5bb01d620b8f703407048df0ad531d05e9f7869e57c57a18f4b14f. 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/FR59R2247424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b489f4c9e5da650e78177e8eb96801c7ce4ca1cac0ae691d1dbfd2fc5c15dff. 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/FR59R2247431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d678df65e0cf9ad13200a65bab9e1e243c40b6f9de76e928a51632694da997. 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/HKE950000001.