A walkthrough of every decision involved in setting up a campaign — from choosing the model and price to connecting Stripe, verifying your nonprofit status, and going live. Read it end to end if you are evaluating BidMosaic for the first time, or jump to a specific section.
A BidMosaic campaign is a single shared canvas your supporters fund pixel by pixel. You set the cause and the rules; supporters build the artwork together as they contribute. The canvas can start blank or be seeded with a background image you supply — the choice depends on the mosaic type you pick.
You are not bolting a fundraising widget onto a campaign. The mosaic is the campaign. You set the canvas size, the per-pixel price, the contribution rules, the timeline, and the payout account. BidMosaic provides the platform; the campaign and its proceeds belong to your organization.
This is the most important creative decision you will make. The type determines how supporters interact with the canvas, how prices behave, and what the campaign feels like as it grows. You pick one type per campaign.
Once a pixel is committed, it cannot be overwritten or moved. Every supporter's contribution stays exactly where they put it.
Expected dynamics — Steady, linear contributions throughout the campaign. Supporters return to admire what they placed and bring others to see it. No price escalation, no urgency.
Best for — Memorial campaigns, recognition walls, founding-supporter honors, gratitude mosaics, perpetual donor walls.
Every pixel starts at your base price. Later supporters can overwrite existing pixels by paying more — your bid model determines how much more. Earlier supporters can come back and reclaim their pixels by outbidding.
Expected dynamics — Higher per-pixel revenue as the campaign matures. Hot spots emerge as popular regions of the canvas climb in price. Drives competitive engagement and social sharing. Supporters return to defend their territory.
Best for — Active community campaigns, signature events, time-limited fundraisers, organizations with engaged audiences who will come back.
You provide a background image and a covering. Supporters pay to scratch off sections of the cover, revealing what is hidden underneath piece by piece. Once revealed, sections stay visible.
Expected dynamics — Strong early curiosity, sustained mid-campaign engagement, and a spike near the end as the last sections come off and the full image emerges. Partial reveals make compelling social posts.
Best for — Reveal-driven campaigns, photo-driven causes (rescue animals, programmatic outcomes), countdown campaigns, anniversary reveals.
Two numbers shape your campaign's economics: the base price (how much one pixel costs at the start) and, for dynamic bidding, how that price escalates each time a pixel changes hands.
The cost to place one pixel. You pick this. The right number depends on your campaign — a small intimate memorial may price low to encourage broad participation; a high-attention event may set a higher price for signal value. Pick a number that reflects what one pixel of contribution should mean for your campaign.
If you chose dynamic bidding, you also pick how the price escalates each time a pixel is overwritten. There are two models.
Each new bid adds a fixed amount to the previous price.
Example — $1.00 base, $0.50 increment:
$1.00 → $1.50 → $2.00 → $2.50 → $3.00
Predictable and accessible, with lower stakes per overwrite. Good for campaigns where you want broad participation rather than dramatic escalation.
Each new bid multiplies the previous price by a fixed factor.
Example — $1.00 base, 1.5× multiplier:
$1.00 → $1.50 → $2.25 → $3.38 → $5.06
Hot spots become valuable quickly. Good for high-engagement campaigns where supporters compete for marquee positions and where each overwrite is a meaningful gesture.
Additive favors inclusion and predictability. Multiplicative favors revenue and drama. If you are unsure, additive is the safer default for a first campaign.
You can upload a background image that sits underneath the mosaic — an anchor for the campaign that supporters interact with. Whether it is required, recommended, or optional depends on the mosaic type you chose.
You can leave the canvas blank and let supporters create the artwork from scratch, or seed it with a background that shows through any unfilled regions. Either works. A background gives early supporters context to build around; a blank canvas puts the focus entirely on what the community contributes.
This type does not work without a background — the background is the campaign. Supporters scratch through the cover to expose pieces of it section by section, so you need to provide the image you want the campaign to ultimately reveal.
Your charity's logo, a photo connected to your cause (a rescue animal, a place, a person), a graphic carrying your campaign name, or a tribute layout with text. Higher-resolution images render more clearly when supporters zoom in.
A campaign can run open-ended or to a fixed end date. Both are supported, and the choice meaningfully shapes how supporters behave.
The mosaic stays live indefinitely. Pixels can be placed (or rebid, in dynamic bidding) at any time. Supporters can return whenever they want.
Best for — ongoing causes, perpetual donor walls, year-round memorials, open membership campaigns.
You set a closing date. Supporters know they have until that date to participate. After it ends, the mosaic remains visible permanently but no further changes can be made.
Best for — events, anniversaries, milestone fundraisers, holiday campaigns. Tends to produce a contribution spike near the deadline.
BidMosaic uses Stripe for all payment processing. Your organization connects its own Stripe account, and supporter contributions route directly into that account on Stripe's normal payout schedule.
Signing up is free. You will need a bank account, your organization's EIN, and basic verification details. Most charities can finish setup in under an hour. Stripe operates in over forty countries.
Before your campaign goes live, we ask for your organization's EIN and a copy of your IRS determination letter (or equivalent recognition from your country's tax authority). This lets us confirm you are a legitimate nonprofit before you accept donations on the platform.
BidMosaic does not provide legal or tax advice. If you are unsure how to issue receipts or report income from a campaign, consult your organization's accountant.
Once your Stripe account is connected and your nonprofit verification is approved, you publish the campaign and supporters can begin contributing.
BidMosaic enforces platform-wide content rules across every campaign. Hateful, harassing, sexual, illegal, or otherwise inappropriate images, text, or comments are removed. Repeated abuse may result in account suspension. These rules apply automatically — you do not need to configure them.
Tell us about your campaign and we will walk you through setup, verification, and launch.
