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 0x74523662a773138308db103f847376de7ee8fd80c638216c6045dafc49f82f5d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6ce4cc6-27e8-4700-b711-2d3edfd16c30.json and https://artists.proofprofile.net/proofs/artist/c6ce4cc6-27e8-4700-b711-2d3edfd16c30.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 0x3e770936c499c63def34d07038b372c186cb42eac2897ddd330f10f84228213a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEQM51400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f22a87bcd857b7cebcfb05a039fca4524e38b767cdb91eae8d95e1739226bd0. 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/DEZC62042370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d2b53befe8266adccccc05eebd54b98750b81f3532ea92b5c5cd01f285d592. 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/DEZC62042373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732ddc7eb654492655f63f941de8da08ca4cf84525655872a494953cf07970a6. 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/DEZC62042376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c4d0405134d082b16f84c824371e8b17dc7105acffddb27193cd77abde9da. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZC62264719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb22e6d9d1de88574aa77ba15f59b67a42aeb4a47a2b23c0f814f340e32579c7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEVL12400482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866ba5ba4306e39ac739920131912eec2e30bd161e705b5becff4dbda0f58dfb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEVL12400625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e25fdbe8bb1738ce7067f3058ff2de71fdf95aebe191017c872f3557c98a8e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEVL12400626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9462295cd11deee74e092bef1678fe212016c3baf76b1ea6e1f6cd608df335e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEVL12401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b5ebe4ebc152a4db185870af7e0902c9872355b96db1fd195f13ed4d234152. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEVL12401026.