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 0x868ca197c0ca6a6b22f468bc8cddcc5fb0b64b0b60cfddfd2895b35bde477727. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cde9246-1c5b-4da8-bafc-72c2ebcc3855.json and https://artists.proofprofile.net/proofs/artist/5cde9246-1c5b-4da8-bafc-72c2ebcc3855.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 0x565f83fb2c49f25969eb2b80834e35a89841b95a1a0666d99ba656fa9ce7ad78. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADI1741764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e1602b1a4db996bdf62cd139d0793ef92a5e8f69801edabdb3575702285706. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6XY2106569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cffc63336e3a064e17014c52be860d0c5cbe5e105c346fa1d533f8c9f45d9bf. 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/QZQAY2196603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee4222e7d1a48588c084a7b8edbc2e818c33fb6a13fa61d8f16ce64b47b0d12. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZQAY2106926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73440d39f0396f796e706602074338320cfc09570524ff6ee66ad1a3df7d08f. 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/QZQAY2197199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce2b97100c04e1fab8797cfa713b603389e38d77085737c8fe27504cbf03873. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZQAY2104119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d9ccdb75621c05bd56b4551ec97bf4e48087b10b61e5d51cf396b15ba6d085. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZQAY2156318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d6a8e1b0bc90ed283d38a45b50b25d59d2f88bc249a3653f29ed8e269ca90. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZQAY2138302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d34d7e9db2094ba1a48f9dcea25b4fec1660549bcec2df2118b8faef6a76f1. 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/QZQAY2105195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5688286461c9998fafd95b98fef7ae9c5af2d22eb6b20b82e54f35600403dda7. 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/QZQAY2168007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588d8a7de91ba4392c1e3260df09a3eabe77519f8642ddf01ef0443178347915. 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/QZQAY2154479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746effe919e0b50cb1ede355e61895340567142ba8b9f9f074ce1448c2c68ff6. 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/QZQAY2186211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f7d870f4cc44313aa090077de01e585e0248c8a30f18afcfe8b238da8565c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/COA7W2391013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc4d8531497d6efb5808cee0ce5f376a1e211e561e33dbd0eb31d6acf82c5cb. 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/COA7W2320001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77d4aaedf2aa6fb340f645ae216b7e319526c51ee8d534e5512234edde8b22c. 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/COA7W2391047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41d069d2ff6fe26366788c44b8779fa2e80ffed5c95fcbe83afcbf30ff41ed3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA72216130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07505ecc4d520474ded285ec03e7f74ad4f0fe54dbc24af3845cf1bdcfde1473. 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/COA7W2320002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c87b47cd2db9d103191c842ae1f123db1b4aab64ebba269798b1e26cc24067f. 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/QM54E1500167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9352e5691130cdb98d6bf9fbfe2d992c1bee47168a9c9c4bdc57598926601102. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QM54E1500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e737068611f0899137e309cde27f4d701c4df059551f47e195429d2a4cf3d8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM54E1500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8d516c5888ca472d5418f84b225435e6c884d360d0c63b11bd4b451ee398be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM54E1500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1336071a1047744f7e87cbaa404b7ec0db0466fcd004b17c861310b4f65683c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX3Q92179197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c0c5c56753f8734becce3963c15382abbd7dfe24d74caffe485dcaa294090. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM54E1500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8c0d99dfd97566d4dcfd225aa423b4d1a522b20dee4d8425cbd1675724c22e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM54E1500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67225ca4bbe7a1ca133a23d77bba60fa1714a8b42dbd083d0fb01786406da288. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM54E1500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8c2ad11fec4ee47f2c722b0b880b1627cf13dee1aa84db98cf99fb06a58c80. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM54E1500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dc76a49695cd7b589b89c65b76ebd1080034ad71e0da04f609a60e9c9b6112. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM54E1500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b61316ed7d77497ceef33d6ca911a70ae93c1fd05119ca0a9f24393c958d3b. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/QM54E1500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b11b6fe14650eedcab7614d48b89f68ac9fdc2a08b416e328a59a1d19ffe390. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USX9P2025304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e1602b1a4db996bdf62cd139d0793ef92a5e8f69801edabdb3575702285706. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE6XY2106569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2814d264e3af87019cf80e7c1988b710bca182f24348cb75344cc9974be3d00. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZN882236241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5abaa3702143ff023b6514e413283c0731ba3af895bcfb8d14d70d8cd74d7e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZN882236246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d4b94d5fb59749a8c0635b88507597c5b1bd5ac5a86fd827c71cfb17745b23. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMGR32163370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b0b35e80caa47fbdd7d4f5f2a16a609fdab323c0cd7415db47779480747102. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB1754652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e1111efce5b401d6430a1eb18f565560eb4c64cce4c56c0e4398f5ea583be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDA61897996.