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 0x0df0c7c6d28758e9638224344004347ec8e78333cd47abac646757f96c0429a3. 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/6cd3e0db-4648-46aa-a3d9-4b10be5e13c0.json and https://artists.proofprofile.net/proofs/artist/6cd3e0db-4648-46aa-a3d9-4b10be5e13c0.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 0x2e4d222240df26de4ea9c352295cf9789ad9237b55f20dcbfeb5d230ffe13d4a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTPX2227055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac90c4ed5e6f910247539a04b6a6c4ed5171d92389f1b1ee9679cc28d0426001. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTPX2227058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf71dc455205ea394e9aa97d09abbec3da0c119037271051cbbff00e9b6d613. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTPX2227059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee68af564defdbaeb523395ec2aba2f489906f1a1abae254556908e3135a7f90. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX201753440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7025b4720fcc66ae3ad32dbbf106e2a4e6d5ddbf2f3442eb66b01a2df07dca9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:06Z), 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/FRX201753441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6f290c1816e84bf9b9049326f20e0a9f25656d5bfd304bf928626bbba608dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX201753442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6527edfdc8dfdf5c995f1b87a73595278e9fa3be785df008da3a678db1066c37. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:40:02Z), 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/FRX201753445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdb9811922087e5461e8be043fb1d23a49fb47b1f2b9113efbc54fa9851c2ce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX201753448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a42ee366ba4595d15c0b806232168a3f16764d1ef1cd7ca3af7f68cd9a274bb. 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/FRX201753449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6947cde168b785797c4f71c1326107e75fa096c41cc5c642a577e4c6b477c5e6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX201753451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efce762b22324243466376ebcf3198b823d18410076600fdc416b26a70ac5bd. 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/QZTPX2225396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fb01b0e1688b0e136a6d2dfec99c14a3e68aab2cca34e4137721f556557165. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTPX2225397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb802c0deacac0f6f10d7593effe1042057cd9142ebc31c29fe031bdaa2ec77f1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTPX2225399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e305031b6ab965ed193de9824b53f71d81c2282b624f31fdd3fc26e9b366ae5. 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/QZTPX2225400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8d28b40adf513c2ab48ce84e0d9185eea0d607093672de205ca0a2f012386c. 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/QZTPX2225403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a16bf3c540791bae36619d960b76de6a413a44f7939ba8e79ebb09ae5d13b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTPX2225408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8f61225de56cd8caf986375cc27f80c0e9fad0bc16c53cbd0de019c657c7f6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:32:35Z), 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/QZEQU2245798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c7e47ef96929714de9c2129e092e421b73db3e7912859233bddce89d08111. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/ESA112310109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd226aeffcdee8c60c05a580d4026d3def74554b4e264d0a2387da1d1427ec41. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:59Z), 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/ESA112312192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb5593c634308c5d0d75950d724a002e3033b4e2e908bbf83d3bf04bd27ed3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ESA112312196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce7e4f3edae33d6878c1c1c4ab4fd9551f93a0201debbac55e6268fb42ee017. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ESA112312200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4da2ecd9816b0f5c1c473dc58c17f1a033de45294c28c678d29f8bd3e3f348. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA112312201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f7827827a47ac92a77d8a495fc8d08cc5212c638b463f8a71fb8bd48831d9. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ESA112312182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc589130e6c66d276c4346a050dcee81e6825640ffdc27b902480bf696b9f66ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA112312183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb5bd2563df763c2e822848e0356ab9ec4d602ac2341a3a05ba83e7baeedf8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/ESA112312186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf471653ab8622e653d2301046ee7f2f135826ae6ffed66b36a4ddc475394494a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:49:45Z), 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/ESA112312187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580273687bdfda9c5e7c57edd2028368d5a1294cec56f51e5d553c0ff532f57f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ESA112312188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f90c26ee009afecab1ba866062f583653d1760e88068915c06203dbde1c65ba. 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/ESA112312189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195329e05ef0feedf8dd29196f6fbea267761de9c72beee5778c4e1283bf6c2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ESA112312392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c44f8215dbf44498fc6da55407860a7022f82fb9219d8241f41df5ee169e83. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA112312393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8695e2c593cfa4f9e59f6a2404e9617db302d0393dbf84aa3f25ae68881d1bd6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA112312395.