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 0x0bb8ce12b8402921795a10fd12297656fda9399b5061708bdd03f6d9e2ba2b79. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d068bca-f315-481d-85ff-73f9cbfed85d.json and https://artists.proofprofile.net/proofs/artist/8d068bca-f315-481d-85ff-73f9cbfed85d.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 0x19ac82c1122c87b6129bcc75dad44b0a6df9c0a0ec75094933a0b9356a67633a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZFYY2103768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde65cd34b94e6f6a9fef39a6241aeade54ad42063a4e4e3cfe8e6db1191cdba. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:45:45Z), 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/QZFYY2103769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb000ac05d8729d7c70bf579e81658e41f5dc006178103d4fa5301d8ba34da51. 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/QZFYY2103770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6fe6cac77ae7c7b72a245b7a2c7eb3163d32e6c87f824e813380e01515be82. 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/QZFYY2103771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c91ec0f12a045c37bf7c73fcef681504f91a0c5fdb15bab34acff979ae625ef. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZFYY2103772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6b695d9f7e93284606c05fdbc4269a88d04bd06b4479b91010a5d419740969. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZFYY2103773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42727c4264387d137780f78e551b6fee697c47c45d5dbed23e2195f4bf14f108. 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/QZFYY2112591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaa492a97bd9e18bcd7f7092a31facccd4f5497a765f8931b320dc8b6907c63. 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/QZFYY2112592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8658e6e25437e2d1026bbcb7ee62c8ffa167e3f5054d203f23264ab3a707ed8e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZFYY2112593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5712afa7e41d97efc3e3ee297160f32a311a4794cd42ca0b61c94e10ada64f5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:37:13Z), 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/QZFYY2112594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485e687b1e91de2baddfb62e8cd3f3e2bc42b89630a33f304240591e69771ce8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFYY2112595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6605c157c14cc8b73b488d9ed9c1962bf0b491b2a70b23d9fb6b2ce95f2b699. 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/QZFYY2112600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d320fa370555fe431b5e5a55b46a927c05aefd8a5a04445a73299903c2edf50. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZFYZ2171852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c9411ad19fe56845e787504a14f2cb5c2664afe544e5fe0e7ea54e416711e8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:41Z), 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/QZFYZ2171853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53174404564e2c4fa30982930bfb83aa2a76365f7e61bc66eac41cda623b1e84. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:44:04Z), 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/QZFYZ2171855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c10ccb8b68106e1a0e4d1000f0589d87e1b76c418c8171f70e7f5196f4b3651. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZFYZ2171856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8545129a7d257f10bba630db056212646fcf4fd3a3ff76febd42117fc6c208ce. 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/QZFYZ2171857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77565ad137096b64a3cfa4cf653f5e140d2c3dfc10cb7b8ed508cb00618f619. 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/QZFYZ2171860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd90159be997d5249533105703ccbd75f9f5653ebcc3f507a122cfd0771639. 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/QZES51927467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a94d9ad042e9d0e6fe37041a67ff41fba31f722d6f02d5c12e98728e5b1601d. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZES71874757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae72e42dad5dfae93db516d3e579325006897bbad4c370875fd1b099c0bd7d. 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/QZFZ62157648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b748b85c0a18a258b1516f06879cb2e4a3ba41162a37a885d7cfbf75fe196a5. 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/QZNWQ2181623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c64502ca35d8a801bb342a6186c368a25a8cb85c5384244fcf41e48778d807d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6J2003619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a9f5d1fba7414d19da7b25c8f6bd13333e77a4fa4a1359593983c8f17b932d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDA42000657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a617bf3b63619758482b942e3dd53891004abddff12d3a4c3e21ea306f1be9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6J2003621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d2d768fb11ca7aa7e5bbea67db70324e304b50d564323546c09a1674fe468. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:46Z), 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/QZTAT2294108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ff96fe495d6524c7bfc751eb60ded06c51d30cd8b9aea990a04fb4ba4e4835. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:06:47Z), 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/QZFZ42213750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea7335753dd6d690fdd6f77ed8ef8dd1a8f4db18bd0a71cc907f8c09db555f3. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZNWY2330815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3917003447297b1bdb50514777fa97be761e23a5b77a6103134eaef51c64392b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWY2330816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95afe2f6bdb38dae817966cddb5e7a72ff6377110aceca3b41c2810a80e28988. 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/QZNWY2330817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8eb77a6cbaa192ccadcd11f65b28ed376de3bf3d5ff8cfb4b89909b0940272. 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/QZTB82255932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeeefc8eef88ca00c89c767816b91d8049c968907efbe6d53497aba62a505ca. 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/QZNWY2330819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee48010f60b16574c919a975ac914b765fa9a8d9e6da947e347f8328dc5fb2. 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/QZTB82425633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6850a41a6ff94579f78bb36dfd4d313a3a7b1d8711939bfb681b21e270a208. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTBA2452236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c9ae7935e42060c7c597df84593cd23c45ed1729ac6084d0cf127018798dce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFU2446948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb8ce4702c2868a915ab97e675ff0bf4a92b5010d2ccc858d0099a87b35309. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEN2525504.