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 0x91bf959c70da5f5761a24c66f166fe1281d3b5415ded830d322d7d14dafb6d5b. 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/d48fa265-2d4d-43e6-bb64-d07d7e89445e.json and https://artists.proofprofile.net/proofs/artist/d48fa265-2d4d-43e6-bb64-d07d7e89445e.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 0x7ad5ff72c597764d6bbac09a816d38c1b376455d2f811e4aea8fae542c1a5bb0. 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/QZWFM2352030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684239104e2022dde81ba58887e2b12887f410bbf00354aa4693f8be2c3b6849. 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/QZWFM2352032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9733c773e2fdc6377a589c2e83722b7ca42290e1fadedf258d3d08b03021c029. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFM2352034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabde4d9c7cfa59c5d7a87a12de9ceae7ef3614749c31e0c604314ee59aa979e. 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/QZWFM2352035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4c229928022c85cbe782bd925b2aa6792330e74210b489c71031fe423963f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFM2352036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f5788c5529167ced9c4a36418034d5df1805e80bf969911702d9e05deece8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZWFM2352037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e30292330bfc1d00f12020c72464a697a137c5129696bcc4dff576c8ae3fa. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFM2352038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24ea4ecc9e974bb8c96fd164171d1b4e55d34b32cec25ffa5c854e717241abf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFM2352039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d954ce6d49132ccdd31c7d9a8b715ed6abed6e561a96201d3c1e1f469fdf06. 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/QZWFM2352040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f801030f0ba5a1c3a6fe9815ec86199595326866ca3269f1992415044b842a9. 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/QZWFM2352041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877caec49b6ae7ae8f2422d143eec4b0a6ada0b229dbd70c5d462f619b7b7dc. 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/QZWFM2352042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c139f12b25ca5a4bde80983dd2d7c87bf7ee4a78519aeab4978449a543be78. 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/QZWFM2352043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cb747dd0bfed9d5ec667a2773c4a6b078161980631c29f738a62aaff9bf651. 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/QZWFM2352044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe274375fe0e766631367ad37acc0ef07323fea277c2aad18b50a3be07334f0a9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFM2352045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d948b28241dd721ce2388c166dadc2372675e69aef7d0e213a2507a9f30b5. 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/QZWFM2352046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107afa0cdb9b7c433db8e0b79a99cdfa6ac52b8af689bfffed9c31bd040a31f. 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/QZWFM2352047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eec69480ce669ade892ec26e9572bfa6b0bf1cb79ab0bc97ef866be897ad37. 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/QZWFM2352048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d053bb49448a877d8b4dedfb00cc6666e5fc239a46ea6adf97a29aef80ff9c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFM2352049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad62d66c9c7aa4a4f979abf2e3a6d94da05e4ba5e7e46887277250dc3dceb90d. 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/QZWFM2352050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cf619b84b7126737122ab6d25164e7e3864f4838e1bce0c4b37d2798f7aac5. 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/QZWFM2352051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d5c65cda7be70e3400d3747ceed3ca844c3deb399dbc86a3bf3ba19f18363d. 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/QZES92490239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb29f1089352d373089d7dbb29c2497907312ade141a36be702ba977b263d9b. 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/QZES92490240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec617f27c6d296db291c604d8d49a82f122a89b13fb39bbc64ce63c4f7cafd0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZES92490241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9dda32a67a67eac8203c9eb14a07dccf4bd211b78adf129df6d5fbb51e9eda. 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/QZES92490242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3081492ad5fe9345bcfafa40cc9a22f486a4a9b9399df300c8f3fbfb28fa38. 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/QZES92490243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc203419381509308a3a2089a6710dc1f94a98ce60170afca707c40582a5b2030. 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/QZES92490244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba3b9341b9e61171a1d40475c0b71f1910540a5e921e0a904c9ebbe8918f7dd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:32Z), 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/QZES92490245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cf7dacee1ac9dd980cdf242d4633c45ec1bdeaeac891d962557321436f0da5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZES92490246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1c5d9cd795f320744a9b197304a4ff4f5692cd704b6bfa6da646306e330226. 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/QZES92490247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b5a2deaa26b5fd7003dee322d9398a6825e01c5497701b752254d2c58d6a5. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZES92490248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f43ddc67bfad8e9f7ec2da4db3d3f5468bc8b1398baff207eb1d6f4b70b95d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZES92490249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76c4ac5d31679992fb23a6e74b3a3405b53912f5c8bafe108868d5f563bea1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZES92490250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10f6f04f0159feb49afef33d4934a6e8d3e4408a9e8a5a76945c554dd8e6966. 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/QZES92490251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2833041dc1b785a9d6241419a5353c3bf7cfe9f6d6037a9b5395d81818ec1e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZES92490252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f48c13c67e9a6de6807e342959bd5255f6cb7e2eb8d5f1fe97952b2725a3f. 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/QZES92490253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62c47eb007902424528107051f43bf2bdcdfb719e437f4f4178f9bf51246be8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZES92490254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb599d732d828aa18dd5b734a781e77dc68737057bc853ed8fb06b8b583bbc840. 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/QZES92490255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf83c836167bc0271987f1821674500b12e687d556c59363bb9ee2061fdfbff1. 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/QZES92490256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb20e06a7d4bfc5a028e5242fd36a87cd57d7293da2c9f3991cdf6f8964285d8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:24Z), 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/QZES92490257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757a68412ae38057694dd48c6805713f78a65164380daa7f224965e7dc79bfe7. 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/QZES92490258.