Unique identity
Each selectable unit has an inventory ID, serial information, custody location, and eligibility state.
Inventory & fairness
Every selection begins with real, reserved inventory.
ArcTrove's production architecture is designed to connect each offered outcome to one unique physical unit, preserve the selection inputs, and generate evidence for independent review. Internal evidence is not a third-party audit.
Generic pack boundary
reserved_inventory_ids[0…N−1]RNG may select an index onlyPhysical inventory invariant
The system cannot procedurally generate a card.
Exclusive reservation
A database transaction prevents one physical item from being active in multiple pools or assignments.
Atomic assignment
The selected item moves from reserved inventory to the buyer's vault without an intermediate resellable state.
Immutable receipt
Pool composition, seed commitments, nonce, policy identity, price, and pull-time FMV are bound to the event.
Deterministic selection
Reproducible inputs. Bounded output.
For generic packs, a cryptographic HMAC-SHA256 process can combine committed seed inputs and a nonce to derive a selection index inside the reserved array. The selected output can only be one of those physical IDs.
Vault Nine uses the same bounded physical reserve differently: a precommitted deterministic permutation conceals the nine mappings, then the customer chooses a display slot. The committed mapping—not a later random choice—resolves that slot to the physical result.
- 1CommitServer seed commitment and pool manifest
- 2SelectClient seed + server seed + nonce
- 3BindIndex, physical ID, policy, and FMV receipt
- 4VerifyRecompute and compare preserved evidence
Audit evidence generators
Evidence prepared for outside scrutiny.
ArcTrove's internal tools are intended to export raw evidence. They do not certify fairness, legality, valuation, or compliance.
Seed-chain manifests
Inputs, commitments, nonces, derived indexes, and selected physical IDs.
Distribution comparisons
Theoretical weights, empirical selection counts, sub-tier results, and expected-value calculations.
Inventory continuity
Reservation, assignment, custody, vault, sell-back, and fulfillment state transitions.
Valuation snapshots
Pull-time FMV evidence, source provenance, policy version, and later disposition calculations.