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 0x8badcadb2e24aab4402866380b1073969fb386ec6323d639338d1c4aa3814873. 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/d074bdb8-8cb9-4063-a998-723b6d4a426a.json and https://artists.proofprofile.net/proofs/artist/d074bdb8-8cb9-4063-a998-723b6d4a426a.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 0x6c9cd5f6d361711d5deb57a06388036dc8b8359550a302a9966181dd5b595b37. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/USCGJ1767446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a900b5bfe0d3c1dc812a72f31ad778a867c0c2a3c77062426149bb82e3804d7. 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/USCGJ1767448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372aa526122cdc40e8a02b09cedfccbf2ecec96bb1bb9f6430b39abdf8691306. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USZHR2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46eff3fa9e2fcad0b3d18aac913ae52d2da6f981ebe70ab8f40984dae93cecf. 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/USZHR2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b0e1bffb5de01837ad38dadd2ebaba263659fb84b376f8b83e57c61b06e44b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:39:52Z), 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/USZHR1800892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a224ca94d79f54c0a25445b8bbca4bc50b03a793a9bfc1eb94a4a149566fa31. 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/USZHR1800856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb449609fa1c36d2cb4b6ab98b0bd737bc5b88eb7eb4eb417043c4ba99acf683. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USZHR2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c8a1f4811e077a7ab801b72aec733b58dcec5bb7d624221c291df1ad247b9e. 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/USZHR2100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b6cc810ff715490e65a51f5c2c0255a2bc36fb5b1aa2e750980af1f4dc36ec. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:26Z), 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/USZHR2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0683116f118a6319a57d378e5a8b17a9816d419cd633c2fd1707e7c7278811. 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/USZHR2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f4e2abcd5b431e481ec7c94fb54b8a85ba4cbf4da29f9726dda391713b37e6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:04:33Z), 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/USZHR2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111928006c2776a5420979ad749938c806c95cf7a583924f78d2e931fb65a946. 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/USZHR2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94371f9560f594630efc809361bf74d7e196037b127feba430413089f109f590. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:03Z), 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/USZHR2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9ed5c56a3fbefeeb6f66760dfece89eb7c6d46a177bf9f67162c5a0b6b760c. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USZHR2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba1ddb622f0078af15e29dc07c54badac91e7e02512b3d5ebf9685ef2585528. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USZHR2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10da5fda7d2d42e73c05835f7b3826125008e7db8c64e93b7e40ebfbceb2cf3. 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/USZHR2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7420cb721e67fd8c1520a7b3c3d25feac87448d0deef97271712a7311bfdd24a. 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/USZHR2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7fef117f2bc4827774f52eba176820b8518dfa73e1c4ebaa0453522c94a237. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USZHR2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba1ddb622f0078af15e29dc07c54badac91e7e02512b3d5ebf9685ef2585528. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USZHR2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792af69cb493e67cde088a21a9f00e6f38083058fe8bb7616ebd37090d68a920. 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/USZHR2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d706c10fbddfd68f63caa381f2d3d2207233d42bc60750d304b3e8d514027e. 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/USZHR2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc8622d5fc85d858b3a7fc503606528026764067c50965d7110df209a4703c9. 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/USZHR2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89fc31c3c30bffff9986ef4e6031b81992c51e0cafb22ed70ee0d1b4cd5d82a. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USZHR2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8f1d9220512aaef89849834ff7e3c345ea681391a3ccdf2f438dc931b67cff. 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/USZHR2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa3e071e209eb030e474a881f332688b5561f452480d1d695d38bdd98b335eb. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USZHR2400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf596d684a7366684821be70d703c13047cac0d20fea4cf93d6570242199d030. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:06:19Z), 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/USZHR2500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17222788b3733d473c7f0328dad17197cf5c7cc3c3f2905ff6a298a8b827fd70. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USZHR2000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c267f8a2815219dfdd218e8f48152ea36261b540e36a24bd6d0c82df134a32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZHR1800743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d82c20688b7169feb00ea01cd4ae4538ea4293e3692cd945561e068e46d0494. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USZHR2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cc6a325bd6f8c34864551833413e9d9cec624a5bf4ff5e9fa56104d96c988b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USZHR2200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bde5adbf8cea33327ee8434c2a1f9d942436d3300f78f7d74940631d41ed73. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USZHR2000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7fb4615032371aeaf1cad46a69608292dcc82bbf356c6a4e78c3d0555cfbba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEM2364198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25afb4b9d1cb4a8f31e35c2f74be5140bc4485e421f8c05296e0bdf536d8229f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZHR1800988.