thumb|upright=1.25| Oolong tea leaves Oolong (, ; ; , 'black dragon' tea) is a traditional semi-oxidized Chinese tea (Camellia sinensis) produced through a process that includes withering the leaves
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 0x1510a058bb461fe55af1a14e31b67687f9408b8bb13a0e1c132f9db8ac67cbac. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e9d05ce-9156-44fc-a4f1-0beb148d887e.json and https://artists.proofprofile.net/proofs/artist/8e9d05ce-9156-44fc-a4f1-0beb148d887e.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 0xce9fa874719369d5fd6a433d5b67cd6260386c3cc4eb8b0c2bf24384ce49b4b4. 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/QZK6N2481974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b0065f6951614bb931f7050f2c71077e06760fa26f3eedfc3071e956477b8. 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/QZK6N2481975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593d6e319a03d90735f65d1af5684d265aa36f82f5325857a12a90b8684d3028. 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/QZK6N2481976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32f1774c255361e1a4c23d678ada1c9d7c3f5ad7232a857bd2ab97d61fa6a8. 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/QZK6N2481977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d00be082a33da50a22b8b260c0a4a9522017158c33d1f1c38afc83576db8291. 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/QZK6N2481978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d13cccbbb8c155d9f95d6392da4b881293bd8bbc9095a8963cbe1c467e8472. 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/QZK6N2481979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fbe4febea78a812d35718d83dbe0a4f30cff3239a73d3a84efc083e574fa90. 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/QZK6N2481980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961c4de7870595444f3cbb3c7a89f5d796772d8d2fe2414964913e39d6344c09. 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/QZK6N2481981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb7443ec3b26179c9dbb0fcc79cde67bd98a53793b7967273a5e95bcbcf3a7c. 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/QZK6N2481982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad731eb6835b18738f8b8cf946acd9367d0ae7e629143fe08abbc67d9d24e9. 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/QZK6N2481983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58e40cf42b896492ea30978ca67be77c88e81a7591dba3b040a5d69747fc89e. 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/QZK6N2481984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96afb8be0ae17cca7836032566e6cc914b92317837fef6d62ff348e0a5e6066. 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/QZK6N2481985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe381d7aa81cda5a091e5a5202cc1b384117cb45d97ee09623e9b7fd792875c08. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:34Z), 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/QZK6N2481986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714bc5b1b1ba370308f4f1087fd8946f8aece30e07d51cb4c8234aa31a64646f. 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/QZK6N2481987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d7acc17f22981c750ccce9fe0e447a0eb1c09992e24cdc15a66e2e7bd78170. 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/QZK6N2481988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa98babd8749e390a8bb43913ef4bccdf8cbd5fbfb9d15e32cb8e371a22903c. 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/QZK6N2481989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cc16baf28385bae9a7f4d03acdc9f2ac4131b3e3c61df42e33423fb4542f6c. 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/QZK6N2481990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a23a5dff859bdb9709856036941d68a003e62880a19c9ad5490f8833c3ac79. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6N2481991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a29db26911b3eeac57332d3b310cfdf9c830ae2280ba3824154e8865fe963a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:54:29Z), 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/QZK6N2481992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a9d7b35af75d1c7c001205ae6af7df4aba523787846a7cd4d1d143e840e2a9. 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/QZK6N2481993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4256ec59a33e7b647d9c0da58f86350398ac6604139cafa08ac2ac96f1ba8f5c. 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/QZK6N2481994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf890fa602fb3f07facb7ec5f51c5c13aee7c5f0415798eab690075f4bbf3f1. 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/QZK6P2053392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6802c7831757eef555640c0af55a34caeb23383184786ae3ba6ab5cfab36a2. 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/QZK6P2053393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ae95b30400ef289842813468a3e022cf4e94e5407836a94dfcc9b45cbdb9ce. 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/QZK6P2053394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82535889433150f477786677d5ff7283f414d2cee87b6a9244b930f4cb43e7db. 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/QZK6P2053395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0871d416ebbbead688c316aa7c9cdaf6f8c184e24e153939ddd04d5e7fd723e. 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/QZK6P2053396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1743b51d77e510e32f101b117b1dd2615605e1b7d2edd60bb4bc5151b50280da. 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/QZK6P2053397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bdbcec6fb2e110811d710f68c98e455cf6d9f5fe3a42aec6aa819148d69756. 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/QZK6P2053398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98640e6a9afb16b203286f32b458149d386efecfcde526eae85645c2292778c1. 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/QZK6P2053399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1575c0ff3c83c5ec8741d33bea86356854f0185186059d2d3979db9885bc62c2. 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/QZK6P2053400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691036fea7b3f04b3f01904cf4afe7c830ea55cd6b47a7e349cba77e37207dbb. 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/QZK6P2450492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c6910b0c9991f94a69213184a8c46007bf09f54b10f64801818325f869efa. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZTAS2392175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571e234aead47489d083b39e77b4f40d1b5a465367ad767e9e084e96dca8dc74. 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/QZTAS2392176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3373695625c16d1d4cb4962f66b1514178a57bb24bc937faaf4e3938a722eaaa. 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/QZTAS2392177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9e93130f17a5eb1800671623923072980f898f09b1853ecd80ac65461b313f. 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/QZTAS2392178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6596c19e0c22fe0d01d25b917e8bfa5920d26ba446c7ecfa7f6906079e952a9. 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/SEYOK2049045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508e91b786c3ea92e4e3e2743df692d283062cb144d6a8962161a6011136a1d3. 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/SEYOK2049046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf29920527c64884cdf89021625f36a54ca7ae5473f49d9aa8aa9a1f4d4169b8. 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/SEYOK2049047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8442b9e901d6f0063d527f6acb63c20ee5c8df01fb47321955fb534d19114e1. 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/SEYOK2049048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2ebb4a8c4b371874ab93db280803510d1ef23cea1107ddb7b70721fdc16ab. 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/SEYOK2049052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2f0b3b96703a3e91b8520bc334a04a84ac7fdc9f9d5c714f8f2896cc709a88. 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/USL4Q2380336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3be329c51bff0210bae795263ff0de2aa8cec50c5b8773c06d780b547e512a. 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/USL4Q2380340.