Identity and Scope
The queried brand and website are treated as an unknown identity unless a specific fact is accompanied by a reviewed primary source. A search snippet, similarly named domain, or search position is not evidence of an official company, account address, app, or service. This guide does not assume the existence of an operator catalogue, affiliation, registration, official link, verified app, licence, bonus, payment method, KYC process, support channel, or financial service.
When describing payments, this page explains the demo's virtual wallet and the limit of external evidence. When describing login, this demo has no account-login flow. When describing the app, this is a browser demo with an unverified package identity. The guide does not turn an unrelated product query into a fictitious casino.
The Original Demo: Idempotent Stamp
This guide hosts an original virtual-coin demo for a game called Idempotent Stamp. The demo belongs to this independent guide and does not certify or reproduce any outside product. The only authoritative game rules and numbers are in the supplied source-bound owner contract and mathematical evidence.
Game Mechanics
- Nine fair bits form a 3 by 3 matrix A.
- Reward is one when A squared equals A over GF(2), otherwise zero; the zero matrix is included.
- The raw reward raised to power 1, 2 or 3 is separately normalized by its exact mean over all equally likely complete draws, giving 96% expected gross return in each mode.
Controls and Persistence
- One whole stake is captured per board; there is no Auto, Stop or cash-out.
- Stake buttons are 10, 20, 50 and 100.
- An idle balance below 10 can be restored manually to 1,000.
- Fractional payout change persists, and an unfinished draw is not refunded on reload.
Wallet and Restoration Rules
Wallet facts come only from the supplied contract. The demo features a manual idle-only restoration that SETS the balance to exactly 1000 when the idle balance is below 10. This is distinct from adding coins or automatic replenishment.
Fractional carry is preserved where the actual contract says so. The settled wallet persistence differs from an unfinished round ending on reload without refund. Not all progress or rounds are resumable. There is no inferred timer, account recovery, cash withdrawal, or network-synchronised account from local counters.
Privacy and Storage
Privacy is described only through explicitly supplied source-observable storage and requests. The absence of account or payment controls in the demo does not prove that no personal data are processed. The guide does not promise anonymity, no sale, no profiling, no marketing, encryption guarantees, cookie duration, or server retention.
Observed Storage
- Game source uses localStorage for settled balance and fractional carry; this does not establish anonymity or exclude other processing.
Third-Party Requests
- Template declares Google Fonts stylesheet; actual full-site network capture remains pending.
Clearing cached files may leave local storage, where that storage is actually used. Terms explain this guide's own scope; they do not invent legal releases or establish an outside company's policies.
Audience and Responsibility
18+ is this guide's own intended audience; it is not a universal legal age, an implemented age gate, or a statement of local legality.
You can take breaks between draws, follow voluntary time or coin limits, and seek qualified local help. The guide does not invent laws, regulators, clinic names, hotlines, opening hours, diagnostic thresholds, clinical research, or biological explanations. It does not claim the demo clinically trains behaviour or makes losses safe. It does not promise account-level blocking, a timer, or self-exclusion tools that the interface does not have.
Mathematical Evidence
Simulation measurements are supporting sample observations, not the mathematical payout law or a promised return. Exact expected values are kept distinct from measured estimates and display-rounded multipliers.
| Mode | Expected RTP | Measured RTP | Wallet Paid RTP | Final Carry |
|---|---|---|---|---|
| Power 1 | 96.00000000000006% | 96.0345335174488% | 96.03453% | 0.7034482755955196 |
| Power 2 | 96.00000000000006% | 95.9862289657244% | 95.986225% | 0.7931034480094468 |
| Power 3 | 96.00000000000006% | 95.64470731055003% | 95.644705% | 0.462068965251774 |
Fractional carry and gross-versus-net wording follow the actual contract. Long floating-point artefacts are not copied into headings, and measured percentages are not mistaken for exact ones.
Frequently asked questions
Is QQ7887 an official company with a licence?
No. The queried brand and website are treated as an unknown identity. A search snippet, similarly named domain, or search position is not evidence of an official company, account address, app, or service. No licence, founding date, or business ownership is established by this guide.
How does the demo wallet work?
The demo uses a virtual wallet. An idle balance below 10 can be restored manually to exactly 1,000. Fractional payout change persists, and an unfinished draw is not refunded on reload. There is no automatic replenishment or cash withdrawal.
What is the scope of this guide?
This is an independent query-information guide with its own original virtual-coin demo. It does not certify or reproduce any outside product. It explains the scope of the demo and the limits of external evidence regarding the queried name.
