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 0x50e560111116b775aaf66c001c6fb4d9d8348dc7bc337fcf502a90d04906a8b2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eabc225c-123e-4e1b-baf8-b83029932e56.json and https://artists.proofprofile.net/proofs/artist/eabc225c-123e-4e1b-baf8-b83029932e56.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 0xa1387c1e2d11872797a7e256a53e229d31ecdeb523ae5314461cc5ed574c83b2. 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/BXFGZ1600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f512222c7464574951e62007e9cc8a1890887a34c5a1e98c4c766f0509bb9. 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/BXFGZ1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74365e523860ef6accb63501289f3d3a40c07e4c18da73dd3143e085c96c9b5c. 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/BXFGZ1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70557031df6609a09490be16e5eb03d21a9663446d0d0394b4cfdb637e341753. 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/BXFGZ1600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be394b9aa5d2f404c8adf31e03ece0ecf43431a8f38c860c763b4df1be46855. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXFGZ1600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06369153520a6d72bec62aa1912aa0be3409cd7432370ab56765358de6a98a5b. 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/USJ3V1879308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137c46a2aa4702591ebb9ad325147bdcb9d05dbaa7bdb4f4917541ae4efbf22. 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/USJ3V1879309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ec8b5e9c0a196eece18ec6a9d21cdfcddc13cca552c3829d32a2a662398c1. 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/USJ3V1879310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c851099da92a62e299dac2a2965122d8aacf113bacaf30443373a53621f5fa. 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/USJ3V1879311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf840ae6382def4e7292d86019f99c9ced5755413c4dcdaa095a7a24a8c3a4c5. 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/USJ3V1879312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d9b68e92eeca7584f62e7fc15bc9aab14760cf00c820e08aabb981a2cb9478. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:23:55Z), 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/USJ3V1879313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d880145b23c1394c45f315045e76a0061522a1fa234b37f86a6651b20508a9e. 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/USJ3V1879314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf40187d054bcd062009f861158561af1f6abf395e806adf8eb1cc5c9211259. 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/USJ3V1879315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b0e152654503611410115877ab1773c26b2aa517cc7db98676be61246977ca. 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/USJ3V1879316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d590aad1c0398ea63709a1224b364db2457739bd37719585f8835bde0e5613. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USJ3V1879317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bb39829f22ddcb8610e623caa1b56c1b7202ad72415cf849f39d8a57e6dbb0. 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/USJ3V1879318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5fd524f5ee5f5d60d2f5d76b8a0ed332105c5c402ed793c63efc7dc7f9689. 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/USJ3V1879319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6580c61579d04bed5dafcc1127ade06fcb463fa6474b89c3d3826416d2eb69. 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/USJ3V1879320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27d03aea55136fedbf95b87337b395f5a626352e7927d135500563d89bb0100. 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/USJ3V1879321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f77316718f92981eef49d702c334efff7d4c84b1f784a4f61c9ed6c05845277. 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/USJ3V1879323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e659462f9a98ea628d8ab24ddeeeebce7f0ee10e6812e818458dc4ba90aba96. 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/USJ3V1801415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a5d94f9ad808935c91b564a9a85a210337648636adf691cf700a48e9d59c28. 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/BXFGZ1600026.