A playable fruit fly whose entire brain is 50 NAND gates.
Deterministic every day · replayable every tick · verified on chain
TapeFly turns a NAND circuit into a living game character. Six senses become a 12-bit word; a 50-gate brain returns a move and an escape reflex; every tick is folded into a SHA-256 hash chain. The input space is exactly 4,096 words, so every possible decision can be checked.
The official brain is TapeOut circuit #1 on BNB Chain. The committed 350 bytes
match the on-chain netlist, and all 4,096 free read-only eval calls return the
same answer as the local simulation.
| Try it | What you get |
|---|---|
| Play today's dish | Watch eight sibling flies survive one deterministic UTC day |
| Build a brain | Turn instincts or readable rules into a NAND circuit |
| Read the docs | Product, science, TapeOut integration, economics and roadmap |
| Inspect Circuit #1 | Processor, transaction, stored bytes and exhaustive verification |
| Use the agent API | Open JSON for all game and circuit data |
| Read the source | MIT code, tests, CI, architecture and reproducible evidence |
| Claim | Verified value |
|---|---|
| Official brain | FFW-NAND/1, 50 NAND gates, depth 9 |
| Circuit | #1 on processor 0x6Ac12D578e29D340f178E18eB2C297C7915E011C |
| Answers | 4,096 / 4,096 identical to the committed netlist |
| Stored bytes | Exact match, SHA-256 a763117011fe4c4be7106d9b0d2c78fe79b81c15ccc2a6531c9263b4f443d4dd |
| Test suite | 95 / 95 passing |
| Production | HTTPS live at tapefly.xyz |
| Dependency audit | 0 npm advisories |
Verify the deployed brain yourself:
git clone https://github.com/tapefly/tapefly.git
cd tapefly
npm ci
npm run verify:onchainNo wallet, account, token or private key is required.
| Typical on-chain AI or game claim | TapeFly |
|---|---|
| Model behavior is hidden in a server | A 50-gate circuit decides |
| Verification means trusting the operator | Every one of 4,096 inputs can be checked |
| Game history depends on a private database | A UTC date reproduces the transcript |
| Users buy an asset without understanding it | Players design the brain before choosing to own it |
| Technical demos stop at a transaction | The deployed circuit is tested against the complete truth table |
| Repository | Purpose |
|---|---|
| tapefly | Live product, deterministic engine, circuit compiler, API, tests and on-chain verifier |
| .github | Organization profile and community health files |
Retired predecessor code is preserved under tapefly-v1-archive; it is not the
current product.
TapeFly is live on BNB Chain. The next integration milestone is a real circuit on X Layer, using X Layer block data for the public daily seed and opening one free arena for human- and AI-designed brains. X Layer is not claimed as live until there is a processor, circuit ID and successful exhaustive check.
- Read CONTRIBUTING.md
- Report vulnerabilities privately through the Security tab
- Follow CODE_OF_CONDUCT.md
- Track public changes in CHANGELOG.md