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 0xc04dfde75f4cc0e16dc91dedf6ff4139cf4588008239176554d5ac847fe9ef5d. 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/bc59e930-f934-425d-8e9a-0354b1dca1d9.json and https://artists.proofprofile.net/proofs/artist/bc59e930-f934-425d-8e9a-0354b1dca1d9.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 0xc2be66701c387bcf8f1bfe9d5dd37ec7d6f8f875d1200046c514dfdad4cd98de. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKZGC2403616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16ae2106c3ce32d2096c0e156ad887db4831e9f3572fa7f99b659123154c2a. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/UKZGC2406956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9534ed825a7f5061f94d50c7909e46606c0bffa49959c6edd1f40025c497496. 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/UKZGC2408492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf458ac6b1ff5608d91c68d0100a963051d9f2c22c25f22e0e2c26606d33b1f3f. 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/UKZGC2408494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4755f53595d4e5c1b741e21d3e51fa2539a4776ae5a22c2d580e15ffb4c5a08. 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/UKZGC2304548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13a56644f5c1a4d4d1070a404c561f9aacb01e4c9b22067c1f5367776b7f369. 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/UKZGC2304549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16ae2106c3ce32d2096c0e156ad887db4831e9f3572fa7f99b659123154c2a. 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/UKZGC2406956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e8a32740865a09c33cbf08e3e338131ac94ed2baf516fd822440c21acf4fcc. 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/US3DF2486681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57399e9b11d427f69a1bf427224fde1c2dc537a18baae0e2a51a0ca201ee920. 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/US3DF2486682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f5d73e384298ef6b1790b0fc75c5ba40bf476933f7da279d36d90b36374d20. 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/US3DF2486684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cacf34d1be2ff3d2caa99b0a257a1101ecfae393279a00d82e5c7cb48d78cc. 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/US3DF2486685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9534ed825a7f5061f94d50c7909e46606c0bffa49959c6edd1f40025c497496. 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/UKZGC2408492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf458ac6b1ff5608d91c68d0100a963051d9f2c22c25f22e0e2c26606d33b1f3f. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/UKZGC2408494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd145e5a31f371d1151f9b1dc5110190d67a86b4eeb17e5cbf335a0a67d0cb1e0. 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/UKZGC2408325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278a2d1e9a4961f0138a421226cea5cc966a7b918146b11c862a06fe6173ebaa. 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/UKZGC2408622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a34832114faac7ba783c62449d9d466e6373bde5580bbe169c40a246bfb72c8. 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/US3DF2521828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09b3142bd4aa4d93cbbea50f095abd5ea951638d3e4c4530c8f357fb763a70. 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/USANG2427380.