SCP 123 Independent Guide and Free Demo

Independent scope

This is an independent information guide to the SCP 123 search topic and an original virtual-coin demo. Operator identity, current domains, available games, payment methods and licensing have not been independently established here. Search descriptions are leads to investigate, not confirmation. This guide provides no operator links, registration, deposits or withdrawals. Its game is our own mathematical example, not an operator simulation or an endorsement.

Containment Span rules

Containment Span uses twelve independent steps, each left or right with probability one half. The sequence is sampled at the start of each round and revealed one step per second. Include the starting position zero when finding the largest and smallest positions. Final reward R is the square of the span: R = (maximum − minimum)². The complete 4,096 equally likely paths have mean reward 24.0625.

At a revealed prefix, collection value Q = 0.97 × E[R given that prefix] / 24.0625. The implementation enumerates the remaining paths exactly. The price can rise or fall and collection pays stake × Q, including the stake component. Manual collection is allowed initially at 0.97 and after any revealed step. Step 12 automatically settles. The minimum terminal reward is 1, so this particular span game cannot reach a zero quote; an alternating path still returns only about 0.0403 times the stake and loses most of it.

Exact return and worked examples

The quote is a finite conditional-expectation process. Averaging the two equally likely next-step prices gives the current price. That property explains the exact 97% theoretical return for any stopping policy using only revealed information; it does not give a profitable strategy. Opening collection of a 20-coin stake returns 19.4 coins before whole-coin credit and carried fractional change. At the end, an all-right path has span 12 and quote 0.97 × 144 / 24.0625, approximately 5.8051. An alternating path has span 1 and quote approximately 0.0403. Both paths have probability 1/4,096. Theoretical return is an average, not a guaranteed refund.

Browser data and the wallet

The game stores its balance and fractional change in this browser’s localStorage. It does not use cookies to keep that wallet and does not ask for registration or payment information. Google Fonts, the Statinside counter and hosting services may receive technical request data such as IP address, browser details and timestamps under their own policies. This guide does not promise anonymous browsing. Its privacy explanation concerns this guide, not an unverified operator.

Limits and responsible play

Choose a time limit and a number of rounds before starting, then take breaks and stop at that limit. Do not chase lost virtual coins or infer a future outcome from recent results. This game is for adults aged 18 or over. Its mathematical return is not a promise for a session. If play feels difficult to control or affects daily life, stop and seek help from a qualified local professional or a trusted person.

Verifying external claims

Check the legal entity, the exact domain covered by any claimed licence and the current status in the regulator’s own register. A badge, encryption claim or attractive interface does not establish licensing, lawful availability or protection of funds. This guide has not verified those details for SCP 123 and cannot give a legitimacy verdict. Avoid submitting identity documents or payments to an unverified recipient. This page is not a route to an operator account.