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 0xde92be229f33624134cdd3f97617f29fd0fbd702bc67150e7d2414dcba54e304. 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/00d4d2f3-a746-436a-b6a7-65994d6816c1.json and https://artists.proofprofile.net/proofs/artist/00d4d2f3-a746-436a-b6a7-65994d6816c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xf1cf176e5f5c1119168fdb55c79e43403f05783e5b49af62a8ae2e23aa9956d3. 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/QZES82123785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b629f81a5fd19d478886d3920262722f7bc0ce361379a22a5d55a5911384121. 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/QZES82123792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e48cb5850d61096ae60169358f801bdc70829df18e2a23391b1b4e32ee761d7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:24Z), 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/QZES92140119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d54ebd8bbe2f95f310619afd063487501b17d778412238c935dd33e266ff97. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES92140122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621257f25485c490fc93aed890697086fdc35ecd1c3954de16667ce99b225a41. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZES92140126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d7126fa3679fd83a4a4e902f6b7e9b37ac259fbe988868c5f69d2be5cf42aa. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZES92160420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f36f401bddb4d73e79137d70d92f59db90c7bb8ab6696b658f6fecd2652356. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:56:20Z), 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/QZES92160422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfee6c14ec151de964b263dacf166f4ca64cf1821add132e830ddefeaffa1095. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/QZES92160425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31a99456feb58b8e505b5ed3642495370db003b3bfae3510eabdeea0f3c9b6d. 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/QZES92160427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a6e2da4fdc042166174968b4a440994c63957698493b30882a5303f6502a0. 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/QZES92160429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898dd7995cf26205baf3e4437745b9a9ae406cc710ddfae29a0be4d84fdcbdd7. 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/QZES92160433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85c8abaff241b6b2fa91a77385c1419e735b8ad27425a5ecf734ba1d5f360b6. 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/QZES92160434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1320969ad028029946fd006dbe8d5032b1e30d802fc1f8b443c5782fdc9f462f. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:49Z), 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/QZES92160436.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5982a2fca166b01da10908ab3613fa50cdf8b32fc4a189393c3b735f6c09fc25. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHN32101233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20474ce0f54314c212d19b1d46f67d0d1b167631fd191b4f459487cdad87cc0. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/QZHN32101247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf95daa4ba3a05b0d4faa6a8292732866f4ce7b5518e8abce78efdb8808934. 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/QZHN32113611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c266c2874901449e4a40e9c58185a30839885c3da0e14e0d8b2c035a1b899b2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZHN32113613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5952b3dc157be06e388595be3fbd1407ca2a2ddbe624a8618ae7b8464073ba61. 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/QZHN32113615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687ced128a55c49c64203c4cb304f19ab7e5ce93b8ffac5c3860bc563e00283f. 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/QZHN32113618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4406be3c8b081fd2eb73c2104bc5e99173fa2e052746094027467497b184e6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN32113619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51fb7b6aa304dd753b2af001bf75bbd968a3cfe8b34b561213e7312729adf19. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/QZHN32113621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99026bc054a764b6f9efc9abdd251f3fb06e7e2fa285a0b0a27d3a9cd7b0f2c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN32113622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9027dae243f487734ef5ed4694732d9e411567a87b254d410977ecc3bc03f. 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/QZHN32113623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9747a239c30dd2e0c6046c49533b5c971fcf3541eb973cf923ed2c862f0179. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFK2371857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fecca5716ddb5a33dcc2e9b2b49ec36daa3979f1431acfa56e45abfa6ec4a6. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZWFK2371858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a1d3eae4f7cca89a94f18f9af158a36fa7646ac48f5a41f14370729503386c. 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/QZWFK2371868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e16e21b9c402dda0c16eb4726498fcc483e01c9db144e934261e66b162c99. 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/QZWFK2371875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbb1688b8c3e1b5611e4bcdca2742ff059fceacf891c56f8846e9321efd28cb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:32Z), 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/QZWFK2371878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be6a9625e1ed90dff53f5142c155fd3c0d044dbc87c3107bee3f2c0a9a7bc9e. 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/QZWFK2371879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dc8f10785c13aa8686fb1e17b318664940e6f6c442f5ea1f6dceef8314d232. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN32112993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e14c5467ee9c256d8cc9ecb2284e44de3b4141e213961b80d2a79d53c0ca94e. 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/QZHN32112994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d06a5ed2a2978baaa1bee4125fc96ea9e5ed30aa24b6e19b38488f5887da77. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:19:49Z), 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/QZHN32112996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8ed0ee9ee7e60472bf2708d4661812a256311d687b9e7c04d92cb41bf98c1c. 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/QZHN32112998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9994b619a3be2eec0e78871bb0242f1172d8b08aafbae2118ef8362e9f9020ee. 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/QZHN32113001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3391ab0b9e4f1a844a714a15e648c1306397af85cb6ffd48dbbb83bf4418470. 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/QZHN32113003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dde727fbf8ef24cea49f5728437768cb2bfaf9f8ee68074c25bb733f8a950a. 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/QZHN32113004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd73e3d005ddaf1e7650df53cf04b6df83eb6ae23b52b1972ce3a5bb80d159. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN32113005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1401456b7ba67dcf952a1798f151ee83707d36f4ac41064026de16bba929c5. 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/QZHN32113006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67725c3f6bd522143b920d3de4fa9f3f1e1f14a80d1f677107574c85528db37. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:23Z), 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/QZWFK2372851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ba177ef4feba00fc6c528240f2cea6279c373e230ac0e76f52912e9a9a623. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFK2372854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b77f2803d1bee32340be3b2dbd73533015aea98755d95d1f6f4b124ef715b. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/QZWFK2372858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7129db0291d372d2f6380e0afd3eda18fc185f7e28eb330ce317d5337bd90c07. 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/QZWFK2372860.