David Szymanski ( ; ; born December 23, 1989) is an American video game developer. Szymanski is known for having developed games such as Dusk, Iron Lung, and Gloomwood. Life and career thumb|Video of
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 0x4eab35f9d74d987e5716eb358d0f4635d9cc8fe6fed3a8eedab31bea847e3c5c. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24183c3d-e121-456e-b197-086d560077ff.json and https://artists.proofprofile.net/proofs/artist/24183c3d-e121-456e-b197-086d560077ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Moon Sliver (Original Game Soundtrack)
The Music Machine (Original Game Soundtrack)
A Wolf in Autumn (Original Game Soundtrack)
Dread X Collection: The Hunt (Original Game Soundtrack)
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 0xa07b801bae5e876d251a627372c74c9540ba49dc13472a9541de9db6d4f0c073. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHQ2355235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed9215e8c560a853d019531da2644256f7d280389bb66f1daff1793742f88e9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHQ2355237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7710ca9f2fc9c2dcee0c8780b94b745919188d8b94b5703731a3758bc460a394. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHQ2355238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ce88444214ced81196e4706c7bd6bf3696457da1806204287c61068a360872. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHQ2355239.