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 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 0x5155bacd450dfe48d3b5b7cc00a9e1121874ccc37eeb3104b02586b4c3c8b773. 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/841e5bcf-3ea8-41b1-aaf5-8f2c331bcd05.json and https://artists.proofprofile.net/proofs/artist/841e5bcf-3ea8-41b1-aaf5-8f2c331bcd05.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 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 0xf4027b4eec125f51bffe152dade1f47f3c7bce3c350cd53cc0d289536269922f. 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/HKG731790603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66576c4ca40ed45872cad30b59d98bf83a067e202cb5047effb64512bf904e9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKG731790604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6969510d58ec2081609949e02a9d134718e149ebf08f354bf8fb7e994aeaf7dc. 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/HKG731790606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb822215cf517a557ad0054f92e1079415b7c9981c4f73c59371096ab96f6362b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG731790608.
親愛的你 電視劇《親愛的設計師》插曲
顏如玉-網劇《大周小冰人》人物主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa729ded9a199f41599ab24842411e1359546ad7dd497a1bbaffe1b955527bcf8. 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/HKC371700598.
爱情砂砾（《情谜睡美人》电视剧片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfabe46f6cbefb6bb49768f2b85ad5e777249e4d655cb4033418165e66c249d1. 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/HKG732401299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc029a8bf004ac51a801b170be518e51bfe0c7de109e9693acff42b60227ba8bc. 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/TWA211659001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c368569648ae3af77d45ad17f4cd337015d800d5e36918a7ecd82a4d1ce7e5f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWCC31500489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b7b308bd1d0ed4b142a44634291652f30f0a091440692a0a72d2e29e047f05. 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/TWA211356802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f203971fbe2e9c6243e40e5d6d1cff9586f03cbaef0fc8740a525be68b67c1a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DGA082448310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33ff33d733b8f1710e50c980f1780f88656f5606865903c6d665dc81b58cc2b. 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/TWA211759301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129a74384623a4bc4626c6da5bbc7372db0c7bcd8d183a2f5cf8a949a7f1162. 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/TWA211759302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cca89d7cd18041e94d307110bfa7c2f209bb05ec62a94237d1b29e1c4363bd. 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/TWA211759303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf336396920db7a23bf72030ac3df5ae785eea24d9e07ff59326444ca3a214dc. 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/TWA211759304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc20760dfd05bef8d8fcc2b712c29108ba9a5896e8fa7dcd930157b321507f5. 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/TWA211759305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64f2c42c16c35aa2fd2821a055b8b723a06eed084684012923492348d229f2b. 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/TWA211751001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6208dc0ec58f99f6035319c8a59d56298346a8323d7117273a3328ff3f2f5d8f. 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/TWA211751002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5961591991134608c7b8e7859a989f0cb6acfb56f824e7337d25199bb7268e. 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/TWA211751003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e1ba3ece996e22de4e7c7f24752a0817cb172caf70c0c4bae57049903b6769. 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/TWA211751004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d75a7949dfece518246b556882bfd46764d2c5aa7a95bbad447effffbde6f9. 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/TWA211751005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00165f5d10458fff5a4b6d59991fee41b3927bcf135e6b6638e0eba34035f32. 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/TWAE31900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ab0ff2a995f704bcaf4c54f7729486527471e9d7156d479d45862a6a25771. 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/TWA211154301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f3d14bf17f0d85e82bee253d8c7e5af76e1f9f148b323f38506231637b4074. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TWA211154302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2e66823945a21f0b396bfb9d1398a970f95c53945c970168a9669deac213a7. 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/TWA211154303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211b090607aa8efd7848c7e3fa359774fa7664c468916ab43932b51d8facc968. 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/TWA211154304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681642b4d579ae8e380b3396354321afb7836c242f84f0cc988c17069090873. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TWD252051531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392359cd1bf442af69d7ac5426dffcb3c1e2baa024bb95609a2a00df30e0c40a. 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/TWD252051532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e44491d4d87dc3efa5da94eb9deb9c7b373dea98b0d4d375f81150414822a30. 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/TWD252051533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b78a507687c38e95b83e70e293b62a9be2c698584a233d9e358c0a2cbdf672. 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/TWD252051534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1fbff324bb92e0a9ba0b4b8dbdf098dc36a09a3d355cc44749ec792fc334c8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TWD252051535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930541578959c22bf007bee65586359635afefc18588360f89f3a0a1d3b5efa8. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TWD252051536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40563907c10500a9efa4d539fdf9b95c2102e5b8d773d1ce9d07d745b0b34f92. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWD252051537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe935b99059d26d2d51941064284131669f10b5746b7851a5c8b6983bb49852b. 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/TWAE32001891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e45729056a9167767aadb389493b5289c1c8579ce10e36b12d792ccf2d4cc2d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TWAE32001892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c27a9e0f2be8ad40f3f74de80ee75daf5d35a64dcc3019736392bbeca7c7d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWAE32001893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b123f9e992ec39b61e023bc080f5959ba9ef9df352c62037f686d9e117d2402. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/TWAE32001894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00165f5d10458fff5a4b6d59991fee41b3927bcf135e6b6638e0eba34035f32. 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/TWAE31900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62dc92d09caf5c0448792aa8c9abc54e16e3b1764d37f7a40f03ec817898728. 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/TWA211653601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701308d3c4d5aa13377ceeb822697e7d3b5068d3a166cbdca4632ce7e38227f2. 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/TWA211653602.
大周小冰人(《大周小冰人》影视剧原声音乐专辑)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cd2a363200060ee803d4269a34eab6f89a71a8e991b93e9eddae2d3a0499db. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/HKG731764051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97867a062b71c029d10417712395964e96c40dd635fa12ab0d0b1fbcd5daccb. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CNA231803660.