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 0x54f31279a2485182d47da3085836d95fef5607f3feb60a1a335d362055916d8d. 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/f49e3b36-cfa5-48ff-bc9d-7352affb622b.json and https://artists.proofprofile.net/proofs/artist/f49e3b36-cfa5-48ff-bc9d-7352affb622b.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 0xdfa9756f4b3f1dd1696760be99f488f01d24a5d409bd5f3c4359bc6a5ade82d6. 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/TCADN1861803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4adf1b5a6c271f12d6f3b45bf8aa8a2de42539a1dbe9cea5591918288b7331b. 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/TCADN1861823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36dd70c558e8d20f4ebceed60be272d70322be4087a889bb0396dfeee759195. 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/TCADN1861827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976a7de0dca31af4bc35929a91e953f110523fcf64d0f19a0767c7ea0b454c1. 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/TCADN1861829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30239acf7cf63ad1d852bab141f8a58211d866ca893597a899ff2a10e79e0c75. 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/TCADN1861833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca5f08cd8f3dcc71dfb84428e73f31d00d3823c288ff4f18399941e527c7903. 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/QZGLM2076946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf33fa1e1ac428904e57d97a7a096b644ecedacf9c47c5bed7183871156d7c5d. 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/QZHZ51917494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995bea92406a1070c18a42c2df85073234d79799df42cd222abfcc1d4117377e. 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/QZHZ51900839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca9dd5b1855d287e7ed6b64f16accb0f0574eab2949e0c1a692e0c6cbb884b. 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/QZNJX2186405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc34b5a9e5b7ca29513b62e944c0a796d3e81ed22435165143e4390d3920368. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZNJV2091234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706762c47fd838f75cb6acbe67c48804608a569f6619c8061585a79880b7f788. 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/QZNJX2186406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86cb2f5f56cc790925a8fe23c451eec8b2b2566155881f5975ff26f136bd667. 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/QZHZ32164343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112cb010b37d12d8f26f0c8f975594c14ae438ab68c3546f41f9d369ece748fd. 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/QZNJX2186407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d987c5bd016b3b86659c188af1de656827c8733e73f060819ccc715911aee82. 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/US7VG2111361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0f762f8189637cfbf5d28dcd1c7de7ec20578859a6df146faa94fccc7e49e1. 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/QZNJX2186408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6412d2bf62ebf488c937fba180bbb1d5dabca3cac9929ead86eee459943bb68. 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/QZHZ62131945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d168c737f8d9357ec3b10e2d407a75145d79f2129a9172c4f05005644a3cfe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ32212842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6412d2bf62ebf488c937fba180bbb1d5dabca3cac9929ead86eee459943bb68. 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/QZHZ62131945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86cb2f5f56cc790925a8fe23c451eec8b2b2566155881f5975ff26f136bd667. 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/QZHZ32164343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d987c5bd016b3b86659c188af1de656827c8733e73f060819ccc715911aee82. 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/US7VG2111361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc34b5a9e5b7ca29513b62e944c0a796d3e81ed22435165143e4390d3920368. 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/QZNJV2091234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a19984f2f6e73a82dc98c8b19bb26ae153f79128be674bb4c03e5edf169d24. 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/QZGLS2026099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd9fe1d37521c73320d6d6afecca0d40a9cbd5ce090bc1c5e8b8b44d427b4e8. 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/QZNJY2339475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551986f6eeef5d97a880d84f9a3b9a9ecdc84756262514807786cfa3b8816a96. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMZ92376932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d33cdd1df4269e81da059beb4a58349cf2f098f600a53d5f95ef33df1298765. 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/QZNJY2339476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0624e3f0b3474926f7c368200bac11a19f727cec40f1462e5f7a9f2d800841ee. 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/QZNJY2339477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972606e7b86e9639c369b3123694c7bf1dc41c878feebd2125eac49ba875a78a. 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/QZNJY2339478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29fe032620088b2d73af43952c78558c298d6528f422bba9917113db6045a70. 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/QZNJY2339479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0601842b89e97751491acead18dfffe9c966f0f38e22a246132e1a5607a2c16e. 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/QZ5AB2364450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38491e2cc702a0b3a12222e387fe2ccaa6b64b58cce82a2bae439206b89510b0. 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/QZNJY2339480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338f74109fce4496f6488130a1da2f0cc651c69105bbc843c9aae3a9cfccb7bf. 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/QZW9N2241698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d458b6058b621f5aea8f52c1d7d6c250d4f4c296f097fd52b04fe6bbd2f2a8. 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/USMH92388039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eeb4983736e7aba37c09668e546f62f6f778129ff1bb4900520553ccce9b9c. 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/USMH92388041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e009bc780e6e356f8bab3de459dc701ec3a999e48043224e43bae809c8aae. 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/USMH92388042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4699047c38e34fca2ef67e4317f8d03e569a3b1bab1c0ff632ca1d1072e2129. 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/USMH92388043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf92ce7787bbf7fa76b1cb03d0a888da8922e312c7fa3cccf271be71c15e54. 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/USMH92388044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb76828f9ad3fb6af62d5eb0aa7971a28e399af59f3858dfc5a7b30780dd04. 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/QZNJY2487164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d35ea936984c7d5581176a5db578970278cd21314d253082c74e1d31f02fa31. 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/QZNJY2487167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b4d2b032f12d3d762a0bc3fb99c9370bb994a3e57a011e2070f382a5a8d134. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:43:28Z), 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/QZNJY2487168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4945e2328216ad2b5a23723cd9ec8b66356e254ebacc8c633035cda690a599f4. 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/QZNJY2487170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a49582f4f7c934d3f2b48e949a1b6684ebf2577e92ad0fdc87439c627a6a8d. 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/QZHZ42180189.