David Levy may refer to: David A. Levy (born 1953), American politician David Benjamin Levy (fl. 2000s), American musicologist David H. Levy (born 1948), Canadian astronomer and science writer Da
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 0xcaeee7202537c0001c64de56bfbb40dffbd0ab8cabe2471e9913cd871bbdeabe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a110d4a6-649b-4fe5-9c04-aef714e2ce8c.json and https://artists.proofprofile.net/proofs/artist/a110d4a6-649b-4fe5-9c04-aef714e2ce8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Apocalypse Road (Original Motion Picture Soundtrack)
Exotic Matter (Original Game Soundtrack)
Fractal Time (Original Motion Picture Soundtrack)
Final Battle Part II (From Justice League x RWBY: Super Heroes and Huntsmen, Part One)
Justice League x RWBY: Super Heroes and Huntsmen, Part One (Original Motion Picture Soundtrack)
Justice League x RWBY: Super Heroes and Huntsmen, Part Two (Original Motion Picture Soundtrack)
Omega Impulse: Machine Hunters (Original Game Soundtrack)
Underneath (Original Motion Picture Soundtrack)
Fractal Worlds (Original Motion Picture Soundtrack)
The Night Before (Original Motion Picture Soundtrack)
Gen:Lock, Original Score Edition (Original Series Soundtrack From Season 1)
Vicious Circle (Original Video Game Sountrack)
Versus, Vol. 2 (Original Soundtrack Seasons 16-17)
Versus, Vol. 1 (Original Soundtrack Seasons 13-15)
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 0x58b6058f839cc245411697dfd09731c4dacb1dd3d67fccabdfc3a79e63f908c0. 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/NLFL72300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b6058f839cc245411697dfd09731c4dacb1dd3d67fccabdfc3a79e63f908c0. 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/NLFL72300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f4bc0ceef8dff60330552333e3dfcaf719aed09aa8886b53c37f43ad0c7f1. 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/QZTAU2102461.