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 0xfdcc1545e6835e385da49fc94a68280b899548f3f738b75e7de3b5cba90c0a2c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/549fad61-a133-4795-932d-743dcb2f068b.json and https://artists.proofprofile.net/proofs/artist/549fad61-a133-4795-932d-743dcb2f068b.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 0x3b6f56e2d6948b38acadd1d4b7d6a909e29b6c09b9ad1dfd2f6d38a771eaa6c3. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZN882223983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc60e9fb3c9ff4ee6daa8315e3f6d6b6a5a32a8e5400d1537ade2d61d845a652. 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/LVF331400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53b80d4f71d674b93b7db70824d7d6706c67b20889b3a64085f394d37273e93. 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/QZN882223988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3dc9a606738ec900775c80e43740246354249016f9dd86273f259b1b08a51a. 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/LVF331400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e96bc2c029ea6203ded833da42ec44a42f70b0f37c013739ee53d3395cc0b8d. 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/QZN882220735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a0f1797b5cf283c9e893fdcbd58b7f6b10eebd89cb07cddeb320d4a0007e87. 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/QZN882220736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437e61622124ed8ac169cbccaaab453a1a95dba8b335294f37bf799507084bfc. 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/QZN882220737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4627c49f2aa7e0e29e163c12eccd3e04a4a253f09707307597e60e02620a017. 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/QZN882220740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb0ce3b95ebca688e59d649c292d0c1c0535ef2236f06a1c1a75fb0bb48fa43. 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/QZN882220742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8c7ce455e8201c84d64c6ebd27ae84a2f4f86239cf503bb59131821d9845c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZN882220743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba8ca6ac23b3a66337b19bd0131025169381a2c1906a87240e0b76630a91022. 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/QZN882220745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f4c0a7aa70c5480b52e745e05cb5aae1cf573bab490eb7c4912c614ce5be05. 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/QZN882220746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd329bcccecdb87360b109464ccb7be1327ba39ec2a9ac7bf4ca298cdf6587. 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/QZN882220747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ace11c7be7fd04279a2ad992decce6f490f09e460360baea2af0380b0fbada. 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/LVA911400612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c3ae96fb38041b103867287b2c497f52875e05433d929f9f163eacbf838d0a. 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/LVF331400010.