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 0xc9bcaf057e8bbd5a0ebfce40421b0eb20b72a501598245e1a94ca2e90db66fd9. 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/2ec6a191-9f80-4ac9-854c-f3bd5c1f14b5.json and https://artists.proofprofile.net/proofs/artist/2ec6a191-9f80-4ac9-854c-f3bd5c1f14b5.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 0x716751f1019113c7f385cf3e857de339f6d1107cf204e9d05c59eeae4a04ff4a. 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/TWA472330011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f68e95abc274273bbe96a38ca4b88a734c041f0cd2b59ac0caa37e16042cca. 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/TWA472330007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece8590b50bc05f8d1799070cd0c13440c30c8ba0c88b17c67baf7293884a241. 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/TWA472330004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe867a41365e53c95cac8c67d14cc05e9d18f88c9c3fa73e8700285924ee6ef23. 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/TWA472330006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d3c161dc261128e1771263e3c776e1738f2976cd88e3c2a7331cb80dd9869e. 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/TWA472330009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa410395742f007bee8e80784b31f988d1a048d86a2d81a6624381cbd64c97470. 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/TWA472330002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5449549e256d55fafb028aa769fc59e64e58072ca84aa93bb6b5b2b65d85c5. 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/TWA472330003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce78dbafd08672b59881d65bd594f1fd7e99edb5d7b8efda5cafcb6a2bd4d966. 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/TWA472330005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad774df87b423a332d2351fc5d36cb9dbd56e902a8a9b55e796b4bbee1fd816. 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/TWA472330008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb003fc79cc49b3724e4ea42df58a2b950c1e38158590acfa72ddc25b541c1. 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/TWA472330010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d6d8961f1cd19e153aa53f14e8c0962fd9022949e0097e2a73206d477caeb. 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/TWA472330001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d47c008b32b4b34036de6c8a24d8821fc7b76f82b53905eba4f6a983fa243. 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/TWA472226010.
不凡 - 愛奇藝原創華劇《不良執念清除師》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b893e5ef444721edc7fa7a13bae704c0dbe99f9c735831f2d2aada85ef1571. 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/TWA472226005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174548008d2b838ed068024e36920e7d7bd9d244db30d6817ddf21d2842173d4. 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/TWA472226003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045bb783ed8cd10db66203832460c06263ee1898622279917626337b1838e787. 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/TWA472226004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d25199f13aced2ff861f813ced2df4d0646a801fd0d6a51e976e6b2bf2a4f2. 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/TWA472226002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fa591498af11febd6d48b5cbc39cc65438bf85d1cfac5d7da74324b6ee5739. 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/TWA472226006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d447f65f8bca593a7e2a5bc445945d3841fc0f49f2772f1c04ba1f847f40c1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWA472226007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689a340d3c903b929396332e9a73a5f80b63ec58932e4c861252e23660689518. 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/TWA472226008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f8c6d96e7bcb516183896a33e214d47be3d347a00d9107c90d48f7466f5765. 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/TWA472226009.
非必要的美好小事 - 三立電視《門當互懟愛上你》片頭曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369ed05d682588db1757720455c44e26f30da76980296756055b49b267be2c4. 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/TWA472226001.
給妳的歌 - 戲劇<網紅的瘋狂世界>插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabeb796fa970c9e7c09e845336be2c492e9c95a234c61d5a1bb90aeb06fa827. 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/TWA471992002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8956d4e2325afd8c301055df0cab0809a9848ba974db9a4f4dd2133258023812. 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/TWA471992003.
如何忘記你 - 戲劇<網紅的瘋狂世界>片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec4d3016c142a0e3294e91e623116f337a87616fd5379cddfaaeae508939304. 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/TWA471992001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2be51cd7791163c943a409f7c97c6a738f27078e959bdda20f4b16190247fc. 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/TWA471992005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1061dee5023710805b48ce30601be2a5f66092a8865218172050ebfeb32163. 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/TWA471992007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d838d4bd4bb0cd3d5932ba20356836c19e81650dba8fcdf871c1d8baafd3027. 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/TWA471992008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeb4a3a6e154ec1bfdb402eefe5def27d04b28d2578c896627ea14e6b20cfd5. 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/TWU711901651.
愛奇藝原創華劇《不良執念清除師》原聲帶
痛苦擁抱 - 愛奇藝原創華劇《不良執念清除師》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ff0ed72b0269fbeebb4f2ace7e84863e916d8dfe70460bf8e13e9bc1235e82. 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/TWA472331001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b893e5ef444721edc7fa7a13bae704c0dbe99f9c735831f2d2aada85ef1571. 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/TWA472226005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d25199f13aced2ff861f813ced2df4d0646a801fd0d6a51e976e6b2bf2a4f2. 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/TWA472226002.
非必要的美好小事 (三立電視《門當互懟愛上你》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369ed05d682588db1757720455c44e26f30da76980296756055b49b267be2c4. 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/TWA472226001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc876a7f05115e04eef5b853bb2d0db0826855400242d4fbcd3afd1ca0e77a747. 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/TWA472221003.
唯一的你 (韓劇《現正分手中》中文主題曲)
唯一的你 - 韓劇《現正分手中》中文主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028975f239a88e413f5f5f751ba1a3ecbc1c5ac78ed4e31cffa6232b63af91f9. 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/TWA472204001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9a0da6fa6d19b766c15929fcc7387f739125e8cd7bfb19b3c7ef5546b73b65. 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/TWA472008011.
給妳的歌 (戲劇<網紅的瘋狂世界>插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabeb796fa970c9e7c09e845336be2c492e9c95a234c61d5a1bb90aeb06fa827. 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/TWA471992002.
如何忘記你 (戲劇<網紅的瘋狂世界>片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec4d3016c142a0e3294e91e623116f337a87616fd5379cddfaaeae508939304. 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/TWA471992001.