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 0x802de06b4d9e3a4113e3538c7bb050e1edcdf96df3c0ed8bdb93f5bd354a33fb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bed2bae-2d49-40d7-9d9a-b0e2e4a948f3.json and https://artists.proofprofile.net/proofs/artist/1bed2bae-2d49-40d7-9d9a-b0e2e4a948f3.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 0x808ca6a07755b53dd3574757d8938333dbc5c17ca08425feff3951860d3bf8c2. 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/QZFZ22384235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0751f75b550ddeff0120536874814fe4cb3573e0c1502dfd75ca5021cafa29. 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/QZHNC2375891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ed8876f2ba817beaa9d3122b5bd23d2167567ebbe8803e242eae4a41f06f1. 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/QZHN52335124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f4f4bfd04fa170fb830fdbaeb55f3f95e95e047e96cca8a7b352826cf8e41. 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/QZRP52101705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0c1d103cc0e8b78d23fc2bda07d83d84a7944786e43c1ca020c908cae9dd89. 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/QZES52339691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78c1e29e225eebce108e498d5c3e10e7ffd13fc4a9f0685db926be19bb7937c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22242580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cffc96c7893cfd2bc09d8f843d46bf1f91fc58b8d21c13888966f2aa3fa7de. 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/QZES72238542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55773aceffec38d0687558a49d727151bc2617873d68264e7df149e83a3b07bb. 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/QZK6K2341488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cbc3f0475930c53fef786fbc5d823ab731defab8492076af52b0f8d009cb75. 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/QZK6K2341489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c8720b501482f1b9ec306f2776fd1d21d0ab6e34c8a47367e850f8571112ea. 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/QZTB42468331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca21a681cf271af714cfa36c8dcba1b80c187d240b3b39d7b23129a40ab06223. 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/QZNWZ2400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0751f75b550ddeff0120536874814fe4cb3573e0c1502dfd75ca5021cafa29. 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/QZHNC2375891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ed8876f2ba817beaa9d3122b5bd23d2167567ebbe8803e242eae4a41f06f1. 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/QZHN52335124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0c1d103cc0e8b78d23fc2bda07d83d84a7944786e43c1ca020c908cae9dd89. 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/QZES52339691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808ca6a07755b53dd3574757d8938333dbc5c17ca08425feff3951860d3bf8c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22384235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cffc96c7893cfd2bc09d8f843d46bf1f91fc58b8d21c13888966f2aa3fa7de. 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/QZES72238542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78c1e29e225eebce108e498d5c3e10e7ffd13fc4a9f0685db926be19bb7937c. 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/QZFZ22242580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f4f4bfd04fa170fb830fdbaeb55f3f95e95e047e96cca8a7b352826cf8e41. 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/QZRP52101705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0199f996e3973dce40e0994e5be371c05f614438783195a104ced587937cb2. 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/QZHN72021621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4834659868e0188283ecba576ae2b8f2df2ff6b379a1b842712991c2d75c3a. 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/QZHNB2029160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc65e6e916d20e8b6bb01ef5d81a413e2c584666a71aa8a156673bffa8df97a3. 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/QZHNB2029161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075545fb2ed4d684f01ba673c2fe25bd47978287c4ac81447be17dc874167fb4. 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/QZHNB2029162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0199f996e3973dce40e0994e5be371c05f614438783195a104ced587937cb2. 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/QZHN72021621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e025c2618f4ef9397fbffbffb5c368c54ca8d0280cd17f9c90c0b763212336. 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/QZDA41967396.