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 0x7d955b390acffd25697365e3ce2f977d842cd7cacd18f71e3d2834607faaca16. 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/25869ce6-0514-4d1b-ada3-37ea6556e94b.json and https://artists.proofprofile.net/proofs/artist/25869ce6-0514-4d1b-ada3-37ea6556e94b.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 0xcc043698910922ba6fe54b8239e4378fe541e6b42d3ac48c57409d8114f347b0. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/UST8K1669804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443050cfa1a10bb6f46bb183cb6cdbb4d0f3b6a19ec697e92cd0cba1a4dab8db. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/UST8K1669806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb825a305aa3cae24c52322e923120a6ffc85c431cf0d9d9bcad5c6161d5547. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:44Z), 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/UST8K1659690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10911e7047440db9194285c47ab4db6b19256e926d921f566dbe4ad86663bc3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:14Z), 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/QZ4JJ1613413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe877a559d09945d420eeb6475f9622592e53056ff953b5be980d7d577e984a6c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:25:06Z), 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/QZ4JJ1614513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8f6bd74d1b5742b56cb2a47eadf7ce670aad5b41160ac0af7f137e0edbe97d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:35Z), 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/QZ4JJ1741724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e5c19881e38ae412c29abc3b6113937b9bca30affd4150e723e5685d59ef8a. 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/QM42K1704516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6d093fb43fff9d7cfd81f4371420b69ba7f8255a8f1a78dbb7153e824ce8c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM42K1704517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f9f536fa4250660a7628baf519e67b1e1a3c7efadda03f08caf60256de3a0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM42K1704518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc325fd7f62cdb0475aacf06773a191da5b2066bf39c5eae31dbf0a67529c6362. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM42K1705814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e35f668ef182f39221dc1030c3b6a37554f26ca6bcf1e4528bb49c10e35a6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM42K1705819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86bf60d7100f21b0b5f25bf4f8743c434b7966210ce2025a4fe21950b53b226. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:11Z), 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/QM42K1705821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f4a4040a9cdde4ca34eebc460d1346c13c08291d1917f795631eafddd7651c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:46Z), 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/QM42K1705823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc05f441a1daab4e4b84c1882cdcb45ea1eb3e420cbdcb6cdf0cef65918386b1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM42K1708030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1aa08c90c126516a5af30370827ce94d61468e1da7fefbde6b1d0c9c927f3c. 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/QM42K1708031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c24823086634e837da7322b571ba7ddeae10828c3bcd6deaecc3f1ce4cb2ef. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:45Z), 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/QM42K1708032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a32b89e22ae34b76fced2809a412ce64bd72adc0af31939a02900a0fbc085. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM42K1708033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3654e00917a1caab9f8418b6da8e91e6bfa028e9f0c92ad402eac1f4f468c4. 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/QM42K1708034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6bfb8163e0809a6c16f8451dc8dedfc80ea71528e303ea499726d855c4987d. 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/QM42K1701842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ea414b4d6e75867714418632fd49c08be590ae2c334891ce40bd25efbb2f03. 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/QM42K1708038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326af0947145d640c442a151f9525c60d3d4b8b0367e380b3c8862c2eecb0f5c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:01:05Z), 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/USDY41754336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac0f068f97be3aa491365cbb12529017537406594410d8844b557a07de5780c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDY41754337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09eb777b347b6dd1cd9955d1ffd1086fe52630b0b99ed5f8ebff076da9f7e03. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USDY41754338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963386f5352ad63b0a09a8f50b8914ac0e73da90f8924be5d3eec99489f40be6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM42K1742835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8d3b61806e170a9d58b50228c8572ed472c48213a5ad49937383569d883a88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5VF1700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b49a1dc667b326bb76eb405607bf28ae64642e43dafba2494a1f5d1db33271. 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/US25X1801276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9709ae60ba33f7ad451ccd91077ce51c24612fc0ccc9dde2c50e45cb0b7d13c6. 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/US25X1801284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797c440a0e07ea55e2a21cb1bab044b0b61bf3e8546fb7661054ac8223edf661. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBKPL1968232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787aeded260127cbf5bba82e0bcba0d9d11335edbce4a359cbf2c3cfa30478a7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:37Z), 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/ESA012025886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0411e0c0d5f4e8beaec3eb5949f3cf0807ef33c3032bdd32c55e0df845ffe8fd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ESA012025887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a62bf442b2df5a5069bc523d6c639bac6ea2be9bd2cdc290066e77326b1515. 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/QM24S2003994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b47b90bcf7d9dc79422b7c546bb639f2d19455fca2924e5fae974486ebd649b. 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/QZS652104728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5496f5580c6e9c6d030d0d654d4006e1aeed5711aa0a2772a26de324db0934c2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZS7J2339442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af71e5d0f0f7921d02bdeeccb25829ee7cd2962d8d39392a64a04f2fdd9592. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZVEM2374228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffddfaa859a6917f803d6c3c81f6b8e05b33d67d2ad11903245d8aa8f8182c14. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM2374230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180e72f3ae95a361c76668d6541bc3f198fe7f980538d8275f733a5542229d0b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZVEM2374232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9565a1cba51d161121730309e4cddb966387938008f81f114eb1162cd6ef45cb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZVEM2374236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5179e72ae2ac4818d4c6acd99db9953c984e331eb07aef6878ec1072367f0a2a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:17:56Z), 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/QZVEM2374237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a15cd150750a3c4d0ca72377a882da5012d2ce7a0c4476ee5b331a8236e43. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZVEM2388580.