TrustGrid

Identification & activity

Your ID (UUID)Area (Greater Accra) *

Look for your town or area (e.g. Madina, Nungua, Tema). The district name is shown in parentheses.

Group name (optional)

Use this to distinguish your group within the same area (e.g. school, club).

SDG goals (optional, multi-select)

SDG 12 – Responsible consumption and productionSDG 13 – Climate actionSDG 14 – Life below waterSDG 15 – Life on landSDG 6 – Clean water and sanitationSDG 7 – Affordable and clean energySDG 11 – Sustainable cities and communitiesSDG 3 – Good health and well-being

Location

Choose how to provide location. Restore and removal events require GPS (public land).

Use GPSUse landmark & area

Privacy note: Location is used to verify proof and help aggregators estimate pickup distance. Don't capture GPS from your home or any location that could put you at risk. Move to a safe nearby public area before capturing.

Evidence integrity

Lighting is mandatory: Direct, high-quality lighting with every detail of the image visible is required. Evidence submitted without proper lighting will not be integrated into the system.
Use your device camera (do not edit photos) so location and time are embedded—this helps confirm the proof is real.
This proof can be verified at the captured location; coordinates are stored in your receipt.
GPS accuracy is recorded; better accuracy supports on-the-ground verification.

Event Type

What are you documenting? Choose the event first — we'll suggest the best proof type below.

Collect: e.g. beach cleanup, street collection, picking plastic

Add a photo of what you collected and either weigh it (P2), use container-based measurement (P3/P7), or count discrete items (P4, e.g. trees, tires, fridges). Geo-photo (P1) gives location; one of P2/P3/P4/P7 gives quantity.

Proof Type

Best for Collect: we've selected Scale-based Weight (P2). You can switch to Standard Container Count (P7) or Container-based Volume (P3) below, or choose another proof type.

✓ Best for this event

P2 = material on a scale, weight in kg. P8 = other measurement tools (gauge, ruler, etc.) or container estimation.

Scale-based Weight (P2)

Photo showing material on a scale with the weight clearly visible on the display. Use P2 when you weighed material on a scale and the number is in kg (or similar).

Example Photo

Required Elements

Scale display must be clearly visible and readable
Material must be on the scale in the photo
Collector ID visible in frame
Scale must be calibrated and zeroed
Weight value must match claimedValue

Best Practices

Use digital scales for better accuracy
Ensure scale display is in focus and readable
Include category identifier (material type) in frame
Take photo from angle that shows both scale and material
Verify scale is on level surface

Weight

Batched (one scale photo represents multiple bags not visible in frame)

You’re claiming the total kg for the batch. Use the breakdown below to disclose how many bags were included.

Measurement unit (what your scale shows):

Use common weight presets (quick selection)

Enter value:

Material Category

Lifecycle Stage (Optional)

Where in the chain is this? Helps with aggregation. Not sure → use "Other" (e.g. restoration, community garden).

Upload Evidence

Use your device camera so evidence is captured in real time and immediately ingested—this reduces fraud risk compared to uploading existing files.

Take photo

Select an area above to upload.