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 0xc7879b5bb812e3411c698e2e73c3b402b978105749cfa1e1c14e1942a4415a57. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ef72bca-7e1e-4469-aac0-d34d38096307.json and https://artists.proofprofile.net/proofs/artist/3ef72bca-7e1e-4469-aac0-d34d38096307.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 0xd97a8d1404bd6867e3feb96484fa0f8f65ebc0b382797966d3e96cb7a8efef1f. 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/BRCOG1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de013cd0d157e9640650e4fec573e16a7873dcc2a5e4c4f309a7afb94452740. 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/BRCOG1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecadcdd63ed42b42c2f6d0c8918a486231e643bff736bcebdcc7674330b44c1a. 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/BRCOG1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc795e1b15e846ca7a6be87aa692a24611b3f3858bdaa69fa63d4da6ce67e684e. 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/BRCOG1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c92723fcb2c7f295c796712109f35d1d848ad6a30e82ed0f69cbc55518a420a. 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/BRCOG1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cdf9dbc8db8bf99086adec1066d8098cc569e41bf689f5a6b709692a75916c. 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/BRCOG1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa579e77afb30c1fe05819751527cf1c595b49d8013965cb7ebbcbb85015d362e. 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/BRCOG1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9559b475b62fec24208131720e2396efde000897b301c762a1e77c2224f41158. 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/BRCOG1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0229953437d92132dfd155cfbbf0b4adb68c879f57ee1e2322e62b348162a3. 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/BRCOG1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c915f621809d7e4f67306beb5913bac103fa1cdfb3d51ebacaa0ba8e384149. 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/BRCOG1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad988cc0c83e6a3384bd72ed5865ea52b34624eac8bb0173da5121aa263f61dc. 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/BRCOG1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6ee48945dfd2967041716b211a2e1dafa512efe6338386958f284016afe4e9. 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/BRCOG1500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8885c9059911e185c3698843fa8fea11da99eaceb5236bd195d93a488c2d0e21. 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/BRCOG1500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800cebd86823f95c8106d7fbfb00f91cdc3266c8addb3cc624ce5a0a3accd02. 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/BRCOG1500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929c635bb5558e83e0d1a50b8cd2e1486f874db9ba9cb155053c67c9303b9ef8. 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/BRK742100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b06a7db4268567b4732a2220794a611efb3af4ef94400d53d0caefceab6b7b. 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/BRK742100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2080662149b3aef5e5c0e008aba277f93ea34224f881caed90a674f391d3d35e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRK742100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b06a7db4268567b4732a2220794a611efb3af4ef94400d53d0caefceab6b7b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRK742100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929c635bb5558e83e0d1a50b8cd2e1486f874db9ba9cb155053c67c9303b9ef8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRK742100001.