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 0xd70180232f05df78ae2d4c62fc9f9045a1949190715c6ed92330cd321953a8fd. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2453ac1-1c71-4f43-a50c-dc7056507c37.json and https://artists.proofprofile.net/proofs/artist/b2453ac1-1c71-4f43-a50c-dc7056507c37.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 0x1cebc6775c67e64e01eb8198af7ab6fa9e141ebaf326090a2bc61f11149f14e0. 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/FR96X2209190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5810b4541054c381b05fc4c49373b8a2039af74c50b758e100656d6df560be. 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/FR96X2209191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f8adf7f57d6dcd940e8ac663c8299d487ba7b47ffb2c08fc35cb9c692f7893. 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/FR96X2209192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78738de34cb865e52be7a25b205af5f4674238afd652fdbe603d9f275bdfe2c9. 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/FR96X2209193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104345d7b8c395cfe1c59b5206def87cd90a1b0e3604fd08ceb9462b05d8b782. 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/FR96X2209194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a74ed5a954aa5334b02a769765eef564bac9ae7552b251485c8025006559da. 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/FR96X2209195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb884a937097f8c3356b713b4a204a7c9a9cbee5be887d1f4272516402f2432. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR96X2209196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205fd8ba48f9b431504d5ded33b9a010ce3f371f4f7add113ab24423c1376f9c. 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/FR96X2224133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3e4c3108203d6309103b3408d99d75c90fbd7955fa91faf0726c9985655db5. 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/FR96X2224134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4020f12afb477945f8a650103c65ddce93cf721d8ab068308a34901fd57f7b6f. 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/FR96X2224135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f068aac5e47c0f12ebd75fd36a5bb4deb52c67e637caf3903c278b3d9d6f007. 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/FR96X2224136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cdafd719c25624dd95c2a9a1f6ab5e7f0f1ae566b7df781cc70b7cf2b67108. 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/FR96X2224138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91da8f7e089b3788c6bb4681b5908ef5ccb71df38490fe52d24a6fe88c3b372. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR96X2224139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924871d8219b0846b0c5334af82f60f3b26b86aa70a34957d6c3d50f2bc4f852. 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/FR96X2224140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173ec17b81ce4d543a653149c9148a16ad79892ccbe160b64d21bdde46b320e9. 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/FR96X2207132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd6986681272209e1b3205888516efe11c18d93c965df8cd2979b306a8c3e4. 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/FR96X2207133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d5445357c659f8162e629f03e55645e3fb194ce7c2088cee087fef09bb547. 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/FR96X2207135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aea7eb6ba33f839934f641094a891d376e095e5c9d5a6d43499e15c055c8d9. 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/FR96X2207136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b2ccbd8b37d7a2da8fbbba59a32bc7daeec704d223c2c22cd03373c7886f1d. 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/FR96X2207137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb3612e6bf0e3cc6fe9e6dd037480cfc2248f9376e20e77db82cbb425c1a85. 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/FR96X2207138.
叱咤红人 / 原来你什么都不想要 / 友情岁月
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47637df501130f575db257be71225df757516d064f094c90904d58347d7483d0. 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/FR96X2219272.
倩女幽魂 / 独一无二 / 刀剑如梦 / 失恋阵线联盟
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89975426df54d1df81ef8f2a320c8aba6f44cb70b788c56cdf8e761cfec3d82. 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/FR96X2219273.
夜夜夜夜 / 幻觉 / 别来纠缠我 / 不再犹豫
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4909d9a249af90ebd81c58deb9b5d3401863894fb3f4495d54e33f34b52acb. 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/FR96X2219275.
差不多先生 / Brother Man / 爱就爱了 / 沧海一声笑 / 哥哥在哪？
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e501c93a00d0682cddcc947ace6be502a6d26ccbdc3be757ce4af9919fd78ee. 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/FR96X2219277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3a7bcf5396cee0876cce095ac7241034a750d69b5503d6dba452fd1f9d88b0. 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/FR96X2216384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5819aa071ac4d1aaa3c94f5afc58dbf581f883a5c89119d7dbfd5ae1504e3e74. 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/FR96X2216386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3814d23a2f1d75ba0e62015a33cf384a9a142f683a8eb8a3de87ba34d2201979. 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/FR96X2216387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511d6f7f005981259159d116b4f73ca4156743fde165f548cab60dc997200356. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:20Z), 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/FR96X2216385.
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 0xd24b1737c94a873b5630a2e264e0167a50ebd41fce4e994373e5c39d6fd80693. 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/FR96X2207125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72701488c9c007e39c68f64cf6320f50a3b95160759baf96a03b9edb2840b845. 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/FR96X2207126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db812a70e54441e9175f72694aff7cb3e70e6008a555e9d6027c63fde7e1ecb. 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/FR96X2207127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f876c25351587ac470acad1828db8d0d57669051860862fa4244ee0ed9d5ac. 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/FR96X2207128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa345b6fb8b9b7dc02c588fb9ce579ce1c7dea464db7d474768d61fb30107364. 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/FR96X2207129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd79ea885123bbd8ecd7e476989cf88e0b1970525ec4e1244fca5f8ecad836. 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/FR96X2207130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3cfabb4302b1148ac219a08b1140338e92b92e390bc58602f506c80199a46. 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/FR96X2207131.