1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa81e2e20e99b6d24da3c5122027108e7373a28915450241af7faaa32a903fe7c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2271e54f-380f-44f3-8328-1706e48fc4e4.json and https://artists.proofprofile.net/proofs/artist/2271e54f-380f-44f3-8328-1706e48fc4e4.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 → block OTSBitcoinBlock must exist at that height 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 0xd73f26832429696d2dd365f5fe905b3bff77dae0c854761da23bc5ac1bad5f24. 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/QZXLZ2502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f6eb99e351396d66dc9a461f54b4f438932fd69739454d44270225deee321d. 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/US3DF1106886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0c866da4122091054e459017c99c7ae26404b0b71f967d761a3b6821070b7e. 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/US3DF1106893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca629264f94c54310b0baed07afd01c7e8a1dc1121de9dc46c56880eb2cf6325. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US3DF1106918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc587bc857f27b7950b1ea1a84256064a9c724c375db0a3cab148ad0605e41d22. 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/US3DF1106920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52416e73afc34e823c488bccdd43cfc7a331fca4c98baff5ce2997fbd8d3bd55. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3DF1106922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a68eb5106163149556e86a52066c02d8bdd536fb9f04fd2a5aa1a8b0b0bef1c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3DF1106923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd054e22460405fee75fe9b97be14e544df067d1b8fc7c864a15f28b648ead6c6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF1106924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34443b41e6ba736e3d15757ffbbab5a42f187fcc12db5564f55dffea0f02cd3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US3DF2256392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8bb5b8c26d9bd77f69c75c91d0c9f849ec147b4713eb726632cb5652284c7a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF2256399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e895f6803cbc6d3bb50000c99bb15a3956f6ce568d59a72d1a71d03789bf0d. 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/US3DF2256410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84269ca3340643190452d05d7692a3a2a51d4b7d8283ebec50ac0150a37ce83. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US3DF2256415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9346c1bbd811bcc468bff5bd00955c14518e78416db7f9f7a0016b4e7fbd9dc. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:25Z), 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/US3DF2256416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239ea3ce09b9e949f5f8d0e57f9a95dcfd28cece09a96a0462807254ff429816. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US3DF2256432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd144379c0a3aaf02bfb5ecb61368c9422a3d2dfa2cf719839e21dc96f259e9. 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/MXF010600099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02adf3228cfc9278db3686d912bd0939d0911509939d5acf777a04387ea36d06. 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/US3DF1211327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece2f4018602b2ff50b47ba8de7014a2987f1ca49585466b21ffd988a156ab3b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF1211328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1230c27489739d9a26b3f0102c4f770ec2160499e25c9e4f46c713e0afe4d7. 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/US3DF1211338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93990372d1a2b5962b6a959835cdb7b0366070b4f1c400dd66d21044e0f0854. 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/US3DF1211354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6a25a7b4e0d99acaeabdba0745ea813ab940af10dbd305c77efe7c57fc41ca. 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/US3DF1211345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fae0594bd400e40aa99bca23f7a51957293a84475aed4498a4e47a927eab68b. 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/US3DF1211361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0a0331e1b34c54710d9fc36b1aa280b4c61d700850e0b533dff4ba15a25b52. 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/US3DF1211347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f951cf6f889018285fb636a297d8451d6c8b84c8f85357307195d1a443ce4a4. 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/US3DF1211363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da17ea0fdf54ee75e463cfdbdd07eaf430c17db0e400f2df24f0a4d1adfb2d. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/US3DF1211365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264d1b2ea686115b9e7b80838f811da72b6a79e12267f3003a9083f7e4277e15. 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/QMBZ91699715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5031eba1652c76a603e9d24a97ab4c91362a5c0a8acfb55949e0ce50f4a5f904. 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/QMBZ91699716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938fbeacb58708dbad5746b855afc554a72f0e8126a6c7f28ba69f76f4f2c121. 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/QMBZ91699718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad1ada972f1ee453798bbcbd144bd4d75afce6b96b39a191670a02940f26983. 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/QMBZ91699719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde41e531c362bb86f3ebcc49c38e677c2415bcc09a71a30533c80c14b482807a. 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/US3DF2578754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191d2fbb879acf31d76705213fe6a55dc6ab13adecd4a8d664b7c6615de12a4d. 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/QT3F42515252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c16ed929951638ae1d21a469dd8f786aa2e168da6c94c0cc574aa38fa5334. 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/QT3F42515253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3903e45a379909fecdb6c528715f022cbeac95b57e2aadacf2c72c82e93f2e3f. 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/QZQMB2104102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9370e5038667010c15cc726055ce51644dc8857395d6d2d5f93cbae2ef28f8ab. 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/QZQMB2104117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd350b407872ac010d6579d5188e79bfeffc8dd64335a69811df0f3d9fdc30ae5. 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/QZQMB2104123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309f6d868b4e45f6ba90c5a94d2ae52a3f79577647d15e8a0cfe3c9733445a9f. 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/QZQMB2104127.