Mark Brooks may refer to: Mark Brooks (golfer) (born 1961), American professional golfer Mark Brooks (comics) (born 1973), American comic book artist Mark Brooks (director) (born 1970), American p
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c169b198346536f7fa25dde526bfd74d82ac34e6d525ae84b40542452804421. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9bb17fe-e50b-402f-abec-4793d5ece6c3.json and https://artists.proofprofile.net/proofs/artist/d9bb17fe-e50b-402f-abec-4793d5ece6c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
James Andrews and Trombone Shorty Brothers
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42cd799a3eed3b00039c20bc5e69e8d4dec2e972d45b4bc8ec5a0c6df250d5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEJ1938383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccae7c9c3d6f8c849d3f9a22f8a78e31ecda6258fc2b219d2686cd10062c50c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEJ1938387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf84ed9bfa85fc736eaeeaaa867140aabdd537aa5c381147bbe18cbc4b5063. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEJ1938391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102464a7fa07d4526d3ccb42f4a5596b3f9c41de930b9a9b3e4b9013b23e6f2. 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/TCAEJ1938397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd916c2b3debe96850f3683588cba243881d9959ddaf5d2515abd66d7e47af. 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/TCAEJ1938402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68bffdbdac6d922d388df94673c63c27552e755297c9e60cb29a1f8ca696f63. 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/TCAEJ1938405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45a4f40e5ed6d5a2014f6bf9702a55dec5f2ba39ec1ea8180668f88cd504113. 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/TCAEJ1938412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35105b018357cfc1963062b04974ad01a4eabe574038e0f6af792edee1c1ec3f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAEJ1938415.