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 0x4cb16d65f57f54b1c00f8f8c9fc1a33d2301c5558aeee36425e27c9472981d37. 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/7068cef8-2fed-42fe-b4b8-172760baf474.json and https://artists.proofprofile.net/proofs/artist/7068cef8-2fed-42fe-b4b8-172760baf474.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 0xaf29ccb02b2d1974e838b13ced8665a405d01b1c1c755d8628494382744f5d2f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM6P41865712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19359ad60a9f3a489d6035b66132937fa0db20babf3051e359dfaeeae5fc025. 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/QM6P41865714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b74ed8941378c6912e363178556340c5cf2c592c1239b98dda089de976d285. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QM6P41865718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdd44498da2f1bd2507da7b4fb0e66526f4080dabae2a752374cff67b6146f8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM6P41867801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2e2ac662f0310468f99900e64b4a53a19e9c496177cb06251b7865477c2336. 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/QM6P41867802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9647f9fdf4cf200c58c6bec3e304a127add6b7633badd3b3f546239cc0577e8f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM6P41867803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed3d7b8cd5d35b1566784f2a27d7f7cf2c66673a95c17e209c85203ec5db857. 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/QM6P41867804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914156c10148f2e0686d56d0de018befc36611c3658717492539fc3cb4bb82ad. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM6P41867806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e9855cae45f27599ea854b1593b8a9c888a5a655f7bffb3f73c9cc32c15fe7. 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/QM6P41867807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52523a82453f8e596909eab3ce16b895b0540df7d73476304e95d377f078374. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:47Z), 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/QM6P41867808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f9a56512e38d24ec5d0bf734287313e355b98c2b2c2c3898bedba8c7bd7e0. 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/QM6P41867810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327ec8c052e4405d0b9ec59c741f747e258175f9d927f40c7cdcd142b6068f06. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QM6N21806363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4241afabb05dab6a6c9928e49dd4c8733ad2c94eecc3f77037d3c95fb66b1a4c. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:24Z), 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/QM6N21806364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3596f2f6b7e7260c0710630755d75c20a77f8790aa1e7dc37f8d3d72160b6b. 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/QM6N21806366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3021dee29a731c42911b49f42f0b14bd247ec23bd618359c0ed3266e45e956a. 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/QM6N21806367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a8a876878fa2f1f417f2d3c1193f08aa7eda944ac687a438070b392e20b86. 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/QM6N21806368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6274c13f72136853ee9ef1f666f2c6f3859ccac1a9a9af94e8df8c9602f0b3ba. 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/QM6N21806370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52568c24785e592efb6d547ad912d69980bb08b399fee8040cbd87dd4b630dc0. 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/QM6N21806373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68041cd042ce15634133758040079f8706e8134d21ffae8401793d839c5509b. 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/USPWN1300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac2dafb954004a601abb7c32e0fd77df55898f420c44ec3297e13024800b5b. 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/USPWN1300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ec0287e16637808a6319a3e1cac36793773cb68aacbb9b886be4221ba3dd4b. 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/USPWN1300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b2d233a2c19989d38b53c3ba7b3e9342cf0937f0a3f5fb72c4407fb9fd6c3c. 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/USPWN1300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b97b0ea304b2a673a80d81a3419ce95c597dd2b6faf3d4fa85e62b8b3a34a0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USPWN1300662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b2da4e042aaa9e3951604f8dde7a721beb3066d17aadf5c0f4e3f012d6c959. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USPWN1300667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9263fb0a82eda0cf2de7e09394ec8be6bad8b8c2c4442c9546262453575d877. 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/USPWN1300674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679fc4cab6def7167c00e44faa14cfb48e0e8dd0250e0de616eb35e3e5833a93. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM6N21806359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a748f9d8929e199976a73aaab4d657f777366fdcfd7c4de0bf12dcc2317b84. 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/QM6P41865710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbdc61292c591818adbfdf45113c84dec4b5c87ab41a74bdf4a11b05a37857b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM6P41865715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8a02149f2053880a0bc9a11b981c9e46afcf677bc616e1c9b5beca71589223. 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/QM6P41865716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebf38f35952fbd4b2a9953d3e45c9284b101c59ac959f049cd8d73ef5ef1dfd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM6P41865717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8359d7a55c1f3f03d80549d28e32730372a4d26fa16d60ebcac45e762dc14c4. 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/QM6P41865719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9263fb0a82eda0cf2de7e09394ec8be6bad8b8c2c4442c9546262453575d877. 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/USPWN1300674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d36aeed48420bfd58a1842656f8c6e0f9ce5eb9541b3f5b76e63aa2f01dca7. 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/USPWN1300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab83520669c145730ec61e2f16416701d068d2f2b8e7279bc1dcc1e5874d77f6. 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/USPWN1300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2be2df9b72667defca009e7479a913aecaa8162b18ccf314ad15b73e19887fd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:23Z), 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/USPWN1300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ca59fb9ebb14fee1f3ae05263ad7023570d1fd38c781d4b21cb9d75c391ebd. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USPWN1300528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590ed56315de56ef75d797c141c9778d7def469c846e1bc85fee78f3f6d70b1. 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/USPWN1300529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb4942f895fda017754745502179972190d1a10e890932dd663b640721b0e3e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USPWN1300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a8a876878fa2f1f417f2d3c1193f08aa7eda944ac687a438070b392e20b86. 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/QM6N21806368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3021dee29a731c42911b49f42f0b14bd247ec23bd618359c0ed3266e45e956a. 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/QM6N21806367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914156c10148f2e0686d56d0de018befc36611c3658717492539fc3cb4bb82ad. 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/QM6P41867806.