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 0x0b4ef6ea7e1f12cca6ca193c8207e4163514d5f2ca8d718c969ce7810b1db8ba. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac98a4ce-dcb4-4a5c-860d-ab0594f9052d.json and https://artists.proofprofile.net/proofs/artist/ac98a4ce-dcb4-4a5c-860d-ab0594f9052d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Monkey - Funkin Matt remix #ResirkulertLyd
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 0x87bd356cb05a5f0745abfa13bf3e8b49904cc4c067a0d2c469070604d3a6c1b9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOG841543010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e6c96f46244540e3a618a666c164ccb30f82f109dc0061a19783f24410d321. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NOHLX1757040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade4556912fc6bb0cea1be553e8e5ef85c30613b93a1f63fafb6ef411c8e53f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NOHLX1757060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4584d65d7cdd66d43df0e0dbfdc04302c80ec272e02557f921346a83fdcdc0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NOHLX1757160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8914ec4831eba97a933d38edce98b2179905f20cde6c71ea2be3558df6148029. 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/NOHLX1757240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c10ef89f05ab54b84f4ba2389d6acf89bb26972eeb46f2d1efd5f80aa2485. 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/NOHLX2445010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd98cf1180206df01291e6d0b66d718e134f2972e93d969e2ad015293d70136. 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/NOHLX1866040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a3ca6b0689cf10fb5f9c0610dc7ed8f6372c61d0003f2922e2d525ea054008. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NOHLX1866030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1190c01cfcd45ea9d3a712b291b509c738e9221674d273b07078cad45df0dec. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/TCABZ1481823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c10ef89f05ab54b84f4ba2389d6acf89bb26972eeb46f2d1efd5f80aa2485. 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/NOHLX2445010.