1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x376abb40b97de8c5901794f2baa05da3c2be1805e721c236be439098d14f8dba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/779a3de4-4d0e-4660-963e-0d2e9591928b.json and https://artists.proofprofile.net/proofs/artist/779a3de4-4d0e-4660-963e-0d2e9591928b.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 → block OTSBitcoinBlock must exist at that height 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 0x552311fdb1efd549a1dced62f3d82189cd335cd2b4ff42cab2c97e638f11d306. 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/CZD551400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0af7a01bd187a523e8cd8dc8cc4f1cd3a3c2061b15959099e0b7eaee6976c7. 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/CZD551400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982d67e8c82ef5024570697baab1e0e0d521b0ac06315042959939c557e7908b. 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/CZD551400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3509ff295d4c809d43136a6a5c23e17688ee5172bdf6c9f0fab1aaa7d58875. 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/CZD551400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d54496212916ce5082c1cad55cd7b66827bb17aa9b864d593911d59542852b0. 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/CZD551400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1bddb461b4bab5c9233586a056ab8067e5288b30a538840973855159b8d2f5. 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/CZD551400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398a33cda96581110d04430888cc0919606fad79b27fc815965658cf9af8cc8e. 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/CZD551400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcec30e4e70fa8736bd11a036556efa40eb8899ccc0d3ae526286ad385424317. 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/CZD551400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9da39e455b6be9c99be2f360b00260d5b6a0e3a371edbee21d4fd2e216459aa. 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/CZD551400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3774e7cbaa4b9ee82b7593807f605ad70258d1e69c0cbbcaf899aff7d349e1c8. 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/CZD551400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e1e6f7c1031b72e16e811b0dfe6d33214df630d0261e8692da8773d78e16f. 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/CZD551400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb07873e20bd70ec10a764d9c3c9c39b74925f2417de1b9d3919d218bd05f3a5. 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/CZD551400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded67d633e947fefda1584a662a5db0ec625846610206369bcd1e7dce3196c04. 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/CZD551400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e044482fdb670957d96ce4ea403d7b1d70dc82bff57f18ff6f59f3d56345031. 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/CZD551400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564526ab656d4df76382af2acfe68f3d7ef830af59af53ba8b876e93b1ecd050. 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/CZD551400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5de2d8036d93e364702d73a2f2616170041930a56c6d3258b444d329db0939c. 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/CZD551400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0399f14ce6ce90db22201da5006540375c4d4222c1948028e687482c4c9c30e7. 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/CZD551400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61425b100423b3b9ad8b07e45b9db2c917c7c128b3d8ac81440854b7bd62ee0b. 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/CZD551400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e4321bf192e8756edb4e71f3af7af558fbdabc75dee586c41810fe372cc73. 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/CZD551400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af839e78028e6675330347f4fd4b122d2a7eed64d835bb5b90dd8c54df3cbe8. 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/CZD551400034.