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 0x6a64083e8da0f21ee7e63d2d4e25578dcd9587c1741aace3dbc6c0e72193eac1. 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/35255ebc-b1ee-4bd1-9eb6-06bd5ed22b57.json and https://artists.proofprofile.net/proofs/artist/35255ebc-b1ee-4bd1-9eb6-06bd5ed22b57.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 0x619ff2062cf7030161b9c66309d82173b4bc3bed7b5a92355aaa1e8beb7fd39b. 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/UKZGC2306891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1bd4a7ef52e4fd1f45c6f018954754523179418471e5932b9ace70b6707c90. 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/UKZGC2306924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749c5367fa0e91cda9b4b509bc118b6a1ec14e9dad7c2c837c1ead66aae54d80. 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/UKZGC2307136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3287ae64e2aea789f766d68b481eaa59cabd2507213d2227746bd83310d9182. 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/UKZGC2307328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775afefd77af4a808c4426f141448e1dd71434ec1053cada7fc9f1f8bb90a959. 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/QZN882168359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d04adbdb438bd22ef27ddb4947fa1f8e070d5a0c0489be8bffcab7ff040a09b. 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/QZN882170442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc2141938cd957d09b85082368c2057432d3795d85d6f3328a2b97c7f444b76. 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/QZN882184673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cabb1e5459f55d6b2d16f929a9b49a4845943048db1c94658b1cd6d25b816f6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZN882203884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26524467f29da508f2b29f6d713697756e734e575637d04dad9be6cd4c16053. 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/UKZGC2202058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36191ea592bc1573f48ff08db41cac336d43d9bd77501fba964349ae03ca6a5b. 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/QZN882120483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a697cafe61478ef00a529b9fd1de04b5d8423c228cea11343329684fcc1a62b. 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/QZHN72026537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab571637059dfa63d7ba6f57b7d3c71ea508a612573bfa8b095ff76fb59bb9. 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/QZHN52086844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d600aaf2c0704cb1f183d514d96f8c4037dad9578aae8a5e47162acca081a23. 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/QZHN31976435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2817b4396309621766c2d3f9e45c2b8234a902f51a63443ee23751535f3328d. 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/GBSMU3787984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d8d695070f3366745033aed3503a21c71c6019a44aa513f503f4acb94188bf. 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/QZHNB1987303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52269492d40b4db028a254e36fafa5229613df5c901dff2daeb5db008afb4989. 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/QZHN31976544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9585a14c1e6f9811aa275e36367456150a6c8b85f65b8cff351e5346efd178. 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/QZHNB1996944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6ac92e470b539c77a8f2c9744f6801da90bc01b764523bafe65f7177684bd4. 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/QZFYZ2039942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317b8c557bbbc47cd45c74c7d24322d09dee45225c2a0481e9d8e11e968523de. 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/QZES71862424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc747d7757ec54bcb37f2984f9698f441aa48d9afcc3c4c58b697288d0ab1854e. 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/QZES71862407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54c647dc093b1fc41b773f2b4d47f8a42e720aab084cef198493bdf2b02a30a. 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/QZES71862426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9924ab6c0997822e7e70558ee8824d55887852490ce9b2d43c3b0eb558b5aec1. 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/QZES71862425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5da7221f3c86c9bf997a07f8c12782400e881781b99495ddd004af5c952188. 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/QZES71862428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cc78640fd3ee13e14ce00115f1fde81895586c38fa78e9362689d8766e83a1. 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/QZDA71858680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f8f9c76b4a0196851269ff06cff5292ab0f756156491b40840bb4e04dcb37b. 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/QZDA71858615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749c5367fa0e91cda9b4b509bc118b6a1ec14e9dad7c2c837c1ead66aae54d80. 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/UKZGC2307136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a40cc99e01ce9e6e256edbcfd3132f04224757ab8f695c7ad14c9d8f19f4e02. 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/QZN882212854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cabb1e5459f55d6b2d16f929a9b49a4845943048db1c94658b1cd6d25b816f6. 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/QZN882203884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc2141938cd957d09b85082368c2057432d3795d85d6f3328a2b97c7f444b76. 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/QZN882184673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e83ad822a5bc35687dc4108c1e57f3cd664083f016a788a46553cf8ddab410a. 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/QZN882182440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d04adbdb438bd22ef27ddb4947fa1f8e070d5a0c0489be8bffcab7ff040a09b. 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/QZN882170442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f7ab53b2761c1c98707862bc449aa2df5e51af8d5d3b04776ba7f7c5f4da8c. 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/QZN882150125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb50d093104ca1a6b3ef7fadde9e5a52044606aea6259e8f7e2b64654a27774a. 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/QZN882125560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36191ea592bc1573f48ff08db41cac336d43d9bd77501fba964349ae03ca6a5b. 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/QZN882120483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96b15268546287ef804c0b3a329a191ca5b22a18380e9df2141b9f0c0cce979. 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/QZN882100879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2931dc3078cef054751cb1b941d7a92fc7c859d7ff091de049e8aedc5e6962. 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/QZN882100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e66c22414b2b18aff06a177107132c393a4356d99e9bfee88d0bbbcc8cd38c8. 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/UKZGC2500247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4653222691fb220bec716a35037694ab7c286a2ce6dd12e74f5fbc947ed3d4f5. 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/UKZGC2500024.