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 0x64b40f71788842f7f6ef15ac58f0ef105e1b89fd2be66ed76dc274b2d13585ff. 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/c61e9c87-4cee-4262-8a7f-2007afd5d19d.json and https://artists.proofprofile.net/proofs/artist/c61e9c87-4cee-4262-8a7f-2007afd5d19d.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 0x73ad5cb9aa679347d3cab98213ba085767f9db92f28b959fff28c97bc1a06dd9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA51802089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b91f8be4b6f716299a6c78d16061958948d78b5e552f3854453328a7ba0a75. 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/QM2PV1865557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49c1217a85ac40360a3e16e65c4c3c69c9930221e481234cedf3a034515aa31. 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/GBSMU6117173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79fb6d51a9e04811a3ca726976bf448d1d1a58df33a55aa938017d42a8e47ec. 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/QZFZ41989691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa346773db0e7bfc39983cddc2eb2407ab9d80c46adbc7db8580da175e611ba15. 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/QZHNB2243268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c24c53440f2a7b5078f0de8ac282dbabe76f506aba75734564b4988a7c5f46. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:52Z), 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/QZHNC2209939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9de48e29f7e77d3aa11156b03adfc2f5a76026dbd02018762bba14cdf9087. 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/QZHNC2255109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59156919d65bccbb7d188d709f5089494c430d7c6ff6f62927d0b398dd9c2573. 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/QZK6P2268465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a1545fbc36971d830e2c512f035a3a28acd15dd5e167b2031cec6e3d5ba658. 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/QZNWT2269021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096e45a4cb5303ca72338bb51bdd5483a8492fc6be65121b6244186423bea492. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:42Z), 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/QZRP52218198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7012560e94403b9bdb88e498b7f55fd13281754d3f3ec3cc15c91c4f969be45. 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/QZRP52234994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a43238fc0618ef3b7907867bf58a9edb6e9e1cc5f8a4afdd7c6a3dd564cc395. 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/QZRP52270159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da0d6d9ab07db6fc8cb5a5cc59561bf95fb4f75be4d0075528bb025cd732908. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:09Z), 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/QZTB92230855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8f6f1948e4114ae7c09f271a409e523658515e4b60e6114ae177732c3a4e7e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB92293724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b26c42d8d128bc7824945496adde3c7e9cb3563d3161e267febc3ee66e1980. 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/QZMEM2396750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669b8924309c2e85d97456a9b69efb257c31ccb05850092a02f3fa9b55b66541. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:53:22Z), 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/QZNWV2322998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b673d23016ccc7e844f0bd39655d3c1b49f40415d4801a74bb97566a59f3aa. 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/QZNWX2381905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07beaba53af04e3ec20a81486f41f01fa07da836e4425620ca92c86dc07450c5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZPLS2328323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75788410aa0e9a7c3ba572a6b7ea8a4a831b34ab198c842abc9db87e0c569302. 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/QZTAW2392951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb215d66876dec8071a96e3735856f026733c36a3c9fd38052c3a7513fd05235. 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/QZTAY2326115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e1b455e78d2577bd8d533f7f4d0fd7a3d360741db4ec66aabd08caa9ee3d0b. 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/QZTB82393811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b13a12261a3ef36dd20e4a6de8d25b83f3868c05fdd15cd6b64a578ebed840. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZWFH2390710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5630735df842dc21335914b930ea66b48d66593ea51f06226f726a6f8c60b4. 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/QZWFH2390711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5211181036803e0263b951d382b1425ec4ea523a629a5c42e0a69f36adef21dc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZDA62464906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa009c496867e9e96e7e9feea0767fe8106d2adffb9e65aa37479ba966949ad76. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:26Z), 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/QZK6M2403483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b050dfd288af5067d07db1053122201068e8655f6890eb46b9bb394e5eeb287. 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/QZMEQ2465582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2610dc445bc63fd44388cebc2a499cd68aacd3412827faf9a8cdd1d5cc600e7. 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/QZMEQ2499289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e17a4c43be080742b33898ccd6b3e0d9cf532395bfb01a92d3eac660af823ab. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWX2434085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d442daa5c46df4f7be39989597fa760f06ffc39a66f0c3bf051fccc5974cfd. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZNWX2434087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49245b717004ca0d8d8de96f5037a926b4eb11ca3b8fd1577e1578ca6415a8a1. 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/QZTAS2417364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada1f0e4b46c2c0e03e0eac98aad12b7cfece0df9a3354a116432a1fa900fe60. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZWFL2448039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0282a6a6e312864b3f17169eb0b58fd97ba4bfccbb770059f65a0b50a2bfaf3. 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/QZWFL2442315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a91ea75c7b9b8cd5b43aa3a34d16fee74638acd6fe801c0a1e648225800c9b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:38Z), 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/QT2VB2481301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7143f1b66a5afdc8f6186869c08e3a68f4a68be8bd31f329195ad7a842611fe. 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/QT2VB2481355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4baa5a90c9326e7573ed77c3ca926c437df3547d853b5496a7afd5b8c223819. 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/QZVEM1811762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd646d2a92ae7414da34c04c2f7ea86d1ca53f8c93d57fd19174408acabb16e13. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:12Z), 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/QZPEW2536751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec32530c418f06051ebf36d1c783f5f38f97bb9b0c645dcaf835e98b212e238. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:33:31Z), 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/QZPEW2550073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42752209fcbd76746b37c994cecdfb62407af44fc730e08ec52c57bf3e92dc1. 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/QT2VB2506702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86b3e7c5ac796710325397ae822a38f6006f25fe529de3220aeb6a04b84733. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QT2VB2506720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199cdb491188da8487db2e1d4e31225bdc08fbbe4691f093c4c5846619aa527. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QT2VB2512917.