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 0x3948efbfe22be1efc37ae44c2ad623132bc441a9288741395b50a489d1894308. 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/bbd1c01b-52c7-4cd1-b9bb-4b71d3cda537.json and https://artists.proofprofile.net/proofs/artist/bbd1c01b-52c7-4cd1-b9bb-4b71d3cda537.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 0x9177e0fa766da175e58865a43eb84e10c67f74a767cf3555d1aa75f103b8f1ba. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAIE2404796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a3bbbe1c9467009e948d4e5259e242305f8119be51371d1d26ca32ca53d87a. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCAIG2485342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8359925e9deca667bc4b36fcb3537c7bcf3d7f76df460665e262b7caf17b6a17. 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/TCAIG2485356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7de9654a1bcb2fec7407c4fcbf534e3b4aea5e8656ea5b57a66d64943a58797. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:31:01Z), 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/TCAII2460223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e51c627a0e016adff0c05819a4f41861c7d82714352768651426db7c82f389. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZS652473542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55193aaacdf503f65ca37549212a0bd2110ff3e0027611f9901b37340adba3db. 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/QZS642470778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e51ed587ddca3f0ef100999400b2c476763887bd09778931a04c231222655ac. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:21Z), 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/QZMHM2423922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55b34afbbabf4f1c52042fac02663c56e5452ba22f3b1e7e6ef5d34e5cb046. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZS672435490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908ecbb57575c38c37e085c850f24331037f90ef328e4aeed688801512dd0693. 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/QZS662488256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571bdd4c87034de27e9e36f98fbaedc51cc9fd8939f5da218dcf03404e106ff8. 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/QZS652453569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd68ead51781b66dc0f44312755a9c336d448f8f8df20e097e4489728cc2619e. 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/QM42K2482518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ba2035fd66023b7aaf1e327a51b3bf46031018cf7fe39a7dc3e5f7b0794e6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIQ2458133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48e8fd5917ca7d6f3b1394efe52654600cb9b5995603079c8eb6bd689a40e61. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:32:29Z), 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/QZMHP2437061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41784fe75b83c912cfb6af6b236f05c4f01eb8da41dcce1888747fc5da6c2eda. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZS632471971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f27517d1a0f0cf45310e9973afaafe8e2152944e5f11a836d7ece0199202d18. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:19:07Z), 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/QZS662484498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6d64dc034de2bfe9cbd523fa2c2132f81e9e73b8b2deb863a6d699f0a25663. 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/QZMHN2447315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801aab8e71daeb63e2bf1baac43eb6a5de35d41524f0da0150efbe49da9ea31c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZS662446362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d83638edbf06e69a51b78bf2f1a83ec1202370b603f713963db2c31e9ced101. 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/QZMHM2466920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1f703639c49bbe8b03f9ac260d0746a302c2935dec353493ccada2e01d6085. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:20:02Z), 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/TCAJN2589316.