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 0x33123d286779baa77af491391abaa20caa5669a2efd58800412f49723e720330. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89efb2cd-9f0e-4330-b3c3-a6caac1301b8.json and https://artists.proofprofile.net/proofs/artist/89efb2cd-9f0e-4330-b3c3-a6caac1301b8.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 0x51bde0f6bab6f30e805797e6902bcee5f92b9aa1acbc621d385e782d2b3a9f3d. 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/LTA321800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de8277e53daba7a5d499ec5563843ce2452d834ce466c3de19392df928dd25. 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/LTA321800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410354e71a646425511f871d458c3c4cbd988a6b0fd6396a8151788501c25540. 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/LTA321800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6154e842080e4ea1bc740517a23e31508539efbd8034f1604f7678f251649af7. 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/LTA321800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b33b4ceb022eb9631658d6f05c8f50e9171568054052f18c21fed6f3121955. 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/LTA321800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c2272ebac85e425736ed0acbc86e8c8903f28ffd90a0737817ac2d6cbf488c. 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/LTA321800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb029bbcb635fa708b22213f4237eec76d82a2d2b6961419249f5629c519301e. 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/LTA321800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d5ac8095809cf5c9092a174e3363b091a42fffbd726fb99a2680f45df362c6. 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/LTA321800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02efb740b256b544d73570fdd2f029ae9eacf617eb2f04c766e363b25e1a5f02. 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/LTA321800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ddb5f76453b92d4dda3004495977733a2c6f086d6431eb4c1f05590e058c86. 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/LTA321800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2b7cb3b066dfd1bafb13b1b36d84b5806a997a0375352ffd454fa35ab2fd5. 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/LTA321800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea595a08d7a9a2f717d7fb6f646fcf6729dede43eb42b768785e2dc1053093d6. 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/LTA610500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c0ccfce30cdd1a8bd131ea2bab3a0b285a6160c9b5394d8ee6c6af3abf303b. 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/LTJ052100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9947a38ca265ed4ad51b050b6cdd33b17c05cb074ef83b87125a8612c5bc02. 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/LTC531800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf497cdddbcf0d3298cdb42152bc2565913db1e52adbe29a864fdb38515463133. 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/LTA890300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f241d9b2ae0f2eca8253067668ad0058a8fa8274d7ca48ecc73c467bb8562df. 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/LTB600300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba922d59cac0f150a4e487ce52bcf23d7442e46219454d4d30db44e4d9c6fac. 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/LTB600300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf37dd8f5a8ccdc58ef83beac82c1d0d1d172e1073f0155bb3d00597e887077. 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/LTB600300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49864ce07f546d12d2a46155ed6b4376108ef78a67ce89e2f04004a3ddde3c7. 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/LTB600300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645fee167d119795aebc5c764d1ca2807e1358ab258976b5d8f680af43b126b2. 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/LTB600300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb248a036df7b62d4e7d23f610638ac5f2b35565cb3d3af4a861f36f7a979bd0f. 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/LTB600300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701c4cf767025acb6b0c2c311c15151469d2f152652fbc2157b52565262f02fc. 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/LTB600300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdb15b04f47572c0352e0c0ced7c6e89136900abacfc32858a020359d02be73. 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/LTB600300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937f588f9da638322b1afcdbe7ce59b1c83768da39af9f2538941ddd69e0e037. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/LTB600300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057f9c88d72a6ad77b28d8edcf5bd98dc27cd5b618d25914cd41cf6817dbcfe8. 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/LTA322500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a458ef5f17b24e7576e2c8da27eba1286e5d43f6ce43dd727fcde444ed4ed94. 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/LTA321700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973c7153cdf3fb4313834456e8f1169a2c551357794f22e8129b389e0e3be297. 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/LTA321700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed3f98d997700deae18e3e0f4196c9420f0435dd3fc7339a4f71035c7aed43c. 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/LTA321700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ea6b873f95937a197e88a0e1a170f93e5223c59eb5c8b32b3c80f8b5c9b607. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:52Z), 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/LTA321700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aae8073b5a5b2733e25f62b169722a9e04942bd982482495bb4e1594d356e3. 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/GBWUL2369474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232ea15a3166b280bbd7f5c12d89a089cb9464840d7eda3b636ec96b1f8fb6fe. 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/GBWUL2369487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f0633c97a99ced641166dc12b1ab3870f2fe71e3939743de5817e91c1b5088. 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/GBWUL2369489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb924c05c12c3f31c152f5a4beb9c212d9b43e2767d9956f95b65dd86edac92. 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/GBWUL2369490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf78db0f81eea153a6027c1354cd7a58c3f0b4e58573c9e7a92d4362ad8562. 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/GBSMU7846550.