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 0x9c2aeeff6a1798af6bb0ea89edf415b52c4be289b04fc217271b9a5118b68ac3. 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/86e21bd6-ecea-446a-a44f-0ae7190b0a3a.json and https://artists.proofprofile.net/proofs/artist/86e21bd6-ecea-446a-a44f-0ae7190b0a3a.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 0x3d15765fa71ae967eaeab0fce3a30778ca1bea6a199cb7fb7fc841485c163a2f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6J2506968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be04b8e70cce66ca5ff78e70463e2e48f9cea056c4de1c0e384b7d68cb5f5f7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6G2578914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e5c582fe337fad02683b3458f3257e0e4bd063ae8d4c0f13b77ff386f0f428. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6G2580616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69442b7e525247faa46e11f3de72193cc48c6a5d61da9d53432489b876d4f47a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEN2532271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa72ca7aec89c2c2a207accc0743a06fe6928b181547aa1061a8f62b457fe51. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:35Z), 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/QZMEN2532273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788e47da25281ca401fea7cdedaa17c8ab4d1689d293289e7f8de67c39db90a0. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEN2532274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b7660aeaf7cf2471dc2957e853602323a83dc323428982be6119209262df02. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMEN2532276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48882c0da52e47d8e740bd1cc53f5f55b7c5a74616811919df1dae5d0bff4da9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEN2532277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e6ce4c50fe6bb8b943deb46000ef4d27fd501af940ed3a246ba072e7a7dbf2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEN2532280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2535a8c6364c69e8bd512b20dc72e05c81036c43467f2ccd0fb1fd755a9560. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEN2532284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983fbbc8592ca73386fc83aaed66745699265f63958e5c16ed22355f4c08ce94. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:04Z), 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/QZNWR2513515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c3c51301c994dc0205319a8bd65eac00d4b748e81e87ac6d33d86d187ae0e7. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:15Z), 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/QZNWR2513516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361bdfbbf8c6099494f89f8240db8bcde37c0c30e2f3687e09f6f4e1920e3b9f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:52Z), 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/QZNWR2513517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c35fa81c8f7c275fe9e2d658e32b5af93aa6a43ef552eeb0de05fac579d21. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWR2513518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79df9e89c89b8535026767830ab5dd1119371c5074f762b1686c1e6120e5695b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWR2513519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2544864e4174f49bd8fd0537dbc9abf170751bc2c0302e574b7ee3d96a46930f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:36Z), 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/QZNWR2513520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bdf168869101b570f7e9653173a3dc0fae41f262dd6c4c8cac0fc463659aec. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWR2513521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549be29dfe6b1a911208934de613e6c9306bd7c239a2176f43ef571fc121b6dd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWR2513523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25af36b5ce65acbfccbbb1752fa4c20c6052efdcdc8a1f79064bc6c2e1f26eb5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWR2513524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46a5bc078d5daddf23d4acbd95f76284f5f02f446c497c5f129b1980da447c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWR2513526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d475ae433205ce0827c3920f9559e68278752c98484d62e95d306c2a4310d2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:47Z), 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/QZNWR2513528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d2a2604a79b2b54b1d95b0026e7be0bfc74f846792d21717a0037d6b2d97c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWR2513529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0a0c291911b5de0ca1a3cd165e3e258a16e122eea3fa69fb05a959015d99c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:37Z), 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/QZNWR2513531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c55216689596027be80c550a5ed2d1e8afd46cec6311ab8bea2a1de4326b76. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:28Z), 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/QZNWR2513532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05962ac31defec636ce30ec98ce46370910ed52d4fde83d837d1aca281ec80d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:39:55Z), 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/QZNWR2513533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9671b9ed5f74d31e5ed5f35bc8b547984a9a038f6746faa7f77efba52e96563. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWR2513534.