Custom modules

DAIT extends Cosmos SDK with seven custom modules. They cooperate: x/staking_tiers gates everything, x/tee_attest validates hardware quotes, x/pouw mints credits from those quotes, x/compute_market and x/state_channel move money for the work, and x/messaging + x/agent ride on top.

The seven

Module	Role	Phase 0 status
`x/staking_tiers`	Six-tier locked-stake registry, tier-aware slashing	Skeleton + queries real, msg handlers stubbed
`x/tee_attest`	On-chain TDX, SEV-SNP, NRAS quote verification	Skeleton + dispatch + msg handlers wired; per-vendor verifiers stubbed
`x/pouw`	PoUW credit accrual + decay + distribution override	Decay math + queries real, commit-reveal stubbed
`x/compute_market`	Reverse Dutch auction + streaming escrow	Auction matcher + escrow math real, bank moves stubbed
`x/state_channel`	Nitro / ForceMove off-chain sessions	State machine real, signature verification stubbed
`x/messaging`	Pubkey + contact graph, group state, quotas	Quota window real, msg handlers stubbed
`x/agent`	AI agents as first-class accounts	Authenticate hot path real (rolling-24h policy), msg handlers stubbed

How they fit together

tenant ---> x/compute_market (escrow) ---> auction
                                                |
                                                v
                                       host wins lease
                                                |
                  (tenant) MsgOpenChannel ----> x/state_channel
                                                |
                                                v
                  (off-chain inference, SPUR-IC receipts)
                                                |
                                                v
                  host signs + commits ----> x/pouw (commit-reveal)
                                                |
                                  REPORTDATA verified by ----> x/tee_attest
                                                |
                                                v
                  PoUW credits accrue, decay 14d half-life
                                                |
                                                v
                  block reward weighting via x/distribution override
                                                |
                                                v
                  validators paid by stake + delegated PoUW credits

Source layout

Each module lives at x/<name>/ in the dait-chain mono-repo. Standard Cosmos layout:

proto/dait/<name>/v1/{types,genesis,tx,query}.proto
x/<name>/types/ - keys, errors, params, codec, msg validate-basic
x/<name>/keeper/ - state read/write, msg server, query server, ABCI hooks
x/<name>/module.go + genesis.go - app wiring

All seven modules share a determinism rule: no system clock, no network calls, no nondeterministic crypto inside the keeper. ctx.BlockHeight, ctx.BlockTime, and ctx.HeaderHash are the only sources of "now".