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 0xdc34753e64812d9467008c48278c3ba6573b0a59c90678795ac7f4804a99fdfa. 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/cee9ce28-7dca-49de-88a1-64ae320220ae.json and https://artists.proofprofile.net/proofs/artist/cee9ce28-7dca-49de-88a1-64ae320220ae.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 0x211348f575784aae9e05506e0e75d69e12432c89273969b42cfbdc33a1786c54. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:52:20Z), 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/DGA082204298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c98956e78cf1fb8abc100e233c278bfb96b2b9d51ecf143d16c2fdbc74719. 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/FR10S2089316.
愛不由我 (電視劇《親愛的, 熱愛的》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9c3f1df26975bb820a09e45fdcd2b410e9afb723f5a1fbb388d72cf12695e3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TWU711906634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bea1a13d911490830aae9d259c5c09049f7c9f24295c1b1d163ca0ddc20a8bc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S2089313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858eb01918fe474d66420b1f4d323a37abb3bcbc13fe71450c126c95bb1d4e85. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S2089312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473c53b551b404daf7c324e7d225ddfd25059ae64a0d49e10ca61c576629bad6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CNUM71900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4339150a2108f3dcf36cca1f71d021733114ad45c9de40d12953a2a885a337. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S2089315.
寂寞寂寞就好（青春重置计画 3 剧好听）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8918d4cffe557d88eb65d3b1ce5464ad695eb20c72eddd7e3268709ee11c1b1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:45:27Z), 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/DGA052001545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede712da7300fd6307d9d809266e8eecf952a7052f55dcfff8135233dae39219. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRS182095521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bea1a13d911490830aae9d259c5c09049f7c9f24295c1b1d163ca0ddc20a8bc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR10S2089313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858eb01918fe474d66420b1f4d323a37abb3bcbc13fe71450c126c95bb1d4e85. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S2089312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203740c3d58e3927dd56640989e57f9be4bceaf586fac0014a51ddd2ce6999ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA052001488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8918d4cffe557d88eb65d3b1ce5464ad695eb20c72eddd7e3268709ee11c1b1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:36Z), 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/DGA052001545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a9ffb9437a23766e8c16031f16a47eeda2571eab91aa667de8e7512305c51. 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/CNE222100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95bfa5ae05b52055b3f1d5dad2e716ff328066cd0617c4e9a6358363ec3c685. 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/CNE222100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d19aacdd7eb5cda718c976831171cccc33d4c10ad181d031b9486ce93b5b5ff. 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/CNE222100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3fa4cd3a5f9429c45b3d5caf5305eac64d767686d179e4017ffc96c57f57a5. 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/CNE222100599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba25b58a03c345b4e9569d93035f6bec10333d7cda622c6c60efa937b8e1aea. 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/FR10S2252494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746583d0cc2fd16a0bb82ff4d4b4d2bfde4370cf4454ce1557f636433120ecf3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DGA0R2337309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f877b5c9fd207c64d76ab9bb68dca90cd4595cb28cdd7f295894d7709779cec. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:44Z), 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/FR59R2427305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c121f01bee88c453a4c3c9006a343fe084fbc30fee1163ad9f86b3bfb33ec79. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:25:41Z), 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/HKG732530038.
时间的答案 - 《披荆斩棘第四季》主题曲
时间的答案 (《披荆斩棘第四季》主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e64541c9f3d9d53b77b09cc55eb8e6a455abcb2a8a5f6258f42ea8774372dc. 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/DGA092416015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa43b70d49378a3deddec63fe4b5327a206dfef3fecf753399d8e2835ab90cef. 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/CNZ481900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76007bacca555fa0c78ea913c541d31d3e3d9867d7ec6dd2ec99a14e2d7e6f6. 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/DGA0P2383088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94816a6acbf1982fdb7d5982ee1045da51f1c5dd894cc12cdb7d4a5af74ea70. 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/CNZ171900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94816a6acbf1982fdb7d5982ee1045da51f1c5dd894cc12cdb7d4a5af74ea70. 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/CNZ171900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcecb65d3bef070a387a7c59967d4f50ae7ae732f52275e46c78cd727e6d67ec. 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/TWDK51805166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2498c4328371f8ae358918812846dd56ea04955ae27850b4b1328506747948d4. 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/HKD012508330.
时间的答案 - 《披荆斩棘第四季》主题曲伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613bc9750d18260746dcb9f574220dd92700ec1b17aca23098c1ae9d52f80a7. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DGA092416016.
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 0xaea702e42efba5c402af76aee73cac847acc4c31b0179d97e54fb6868c7782f3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CNUM71900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0050e67d841feef470d647f80c0d7a4738f07a065bee41f0aa3721c761ce4ca8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TWDK51805167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079ad33f3105b5c097a6a1cd3367ccb8b47c4b2de3daf6ddf574c78a6be06d1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/HKD012508337.