Parks and street trees
Capture consistent tree and condition records during routine site visits.
Skip to main contentCondition note Condition note 
Location saved
Human review01/06 
Open the demo Global · 733+ organisations, $22.4T AUM Global · Biodiversity Credit Alliance UK · Statutory since Feb 2024 UK · Mandatory for NSIPs from 2 Nov 2026 
Provenance-backed MRV
Provenance-backed MRV for biodiversity credits and TNFD reporting
JoinEcoGrow is the provenance layer for biodiversity data. Every photo is SHA-256 hashed, every record is reviewed by a second person, and approved records export as a Darwin Core Archive. Built for biodiversity credit developers, corporate ESG teams, and TNFD-aligned nature reporting.
Built in Cardiff for teams who need biodiversity evidence that holds up under audit.
- Product built and live
- DwC-A export live
- SHA-256 provenance
- Two-person review
10:24
Three-photo capture
Cathays Park pilot zone
Shot 2 of 3 · leaf close-up
JoinEcoGrow Field AgentQR-TR-014
One reviewable record
Approved and lockedSHA-256 content hashing
Every photo is hashed at capture. The hash is stored in the Darwin Core multimedia record and verifiable by any third party.
Two-person review
A different person reviews and approves each record. No self-approval — enforced at the database level.
Darwin Core Archive export
Approved records export as a standards-compliant DwC-A ZIP: event.txt, occurrence.txt, multimedia.txt, meta.xml, eml.xml.
Immutable locked records
Once approved and locked, a record cannot be edited. Versioned identifications supersede, never overwrite.
Capture
On a phone
Review
A different person
Lock
No later edits
Export
Darwin Core Archive
Recognised through UK programmes and networks
NCTAProgramme cohort
Sustainable VenturesProgramme support
Cardiff, WalesBuilt in Cardiff
Recognition and programme support. Logos shown with permission where required.
Who it is for
Built for teams who need biodiversity evidence that holds up under audit
Biodiversity credit developers, corporate ESG teams, ecology consultancies, and land managers use the same provenance-backed field workflow. Below is what changes for each kind of team.
Condition noteParks and street trees
Capture consistent tree and condition records during routine site visits.
Location savedCampus biodiversity
Keep photos, location and notes together as habitats change through the seasons.
Human reviewCommunity green-space activity
Let volunteers contribute simple records while reviewers stay in control.
01
Biodiversity credit developers
The challenge
Credit issuance requires robust MRV with scientific rigour, transparency, and public audit availability — but most projects rely on spreadsheets and manual reports that auditors challenge.
With JoinEcoGrow
SHA-256 provenance on every photo, two-person review with no self-approval, and Darwin Core Archive export with EML metadata. The evidence trail credit issuance and audit depend on.
02
Corporate ESG and sustainability teams
The challenge
TNFD-aligned reporting requires nature-related disclosures backed by auditable evidence — not aggregated estimates from disparate sources.
With JoinEcoGrow
Standardised, reviewer-approved biodiversity records with GPS accuracy, sampling protocol, and taxonomic confidence grades. Evidence that holds up under ESG audit scrutiny.
03
Ecology consultancies and survey teams
The challenge
Field data lives across spreadsheets, photo folders, and old surveys. Client deliverables require provenance, repeatability, and standards compliance.
With JoinEcoGrow
Darwin Core-standardised field records with versioned identifications, sensitive-species coordinate generalisation, and DwC-A export. Your field work becomes a creditable data product.
04
Land managers and estate teams
The challenge
Long-term monitoring obligations (30-year BNG, stewardship agreements) need records that remain verifiable over decades.
With JoinEcoGrow
Immutable locked records with versioned supersede triggers. Repeat-visit protocol support. Records that are as credible in year 30 as the day they were captured.
05
Local authorities and public bodies
The challenge
Statutory duties (BNG, Section 6, LNRS) demand evidence that can withstand planning scrutiny and public audit.
With JoinEcoGrow
Reviewed, locked records with provenance metadata. The same field workflow serves BNG monitoring, Section 6 reporting, and LNRS evidence — without rebuilding data for each duty.
The problem
Biodiversity evidence is still too scattered to be creditable
Field data lives across spreadsheets, photo folders, and old surveys. No content hashing, no review chain, no standards compliance. JoinEcoGrow brings it into one provenance-backed, Darwin Core-standardised record a reviewer can approve and an auditor can verify.
- Spreadsheet
- Paper note
- Photo folder
- Old survey
- Map pin
- Estimate
One provenance-backed record
Photo (SHA-256 hashed), GPS, timestamp, species identification with confidence grade, sampling protocol, condition note, and reviewer status — held together as one locked, Darwin Core-standardised record an auditor can verify.
Stage 01 of 04 · Capture
From field capture to a creditable biodiversity record
A repeatable flow — captured on a phone, hashed at capture, reviewed by a second person, and exported as a Darwin Core Archive. Watch it play, or step through each screen yourself.
10:24
Assignment & location
Cathays Park pilot zone
Visit #FA-204QR linked
51.48°N, 3.18°W±4 m
Sat 10:24 · photos required: 3
JoinEcoGrow Field AgentQR-TR-014
Step 1 of 6
Current step
Capture on site
A field user photographs the species or habitat on a phone. GPS, timestamp, and sampling protocol are captured automatically.
Current
Every photo is SHA-256 hashed at capture. The hash is stored in the Darwin Core multimedia record — verifiable by any third party.
Next
Species identification is recorded with a confidence grade: ai_suggested, observer, expert_verified, or disputed. GBIF taxon keys where resolved.
Next
A different person reviews and approves each record. No self-approval — enforced at the database constraint level.
Next
Once approved, the record is immutable. Versioned identifications supersede, never overwrite. The audit trail is preserved.
Next
Approved records export as a standards-compliant DwC-A ZIP with EML metadata — ready for GBIF, audit, or credit verification.
Next
The app suggests. A person reviews and decides. The record is hashed, locked, and exportable.
Stage 02 of 04 · DwC-A export
What a Darwin Core Archive could include
A standards-compliant DwC-A ZIP pulled from your reviewed, locked field records.
evidence-pack.pdf
- Site name
- Example biodiversity monitoring site
- Records captured
- Multiple species and habitat records
- Photos linked
- Yes — SHA-256 hashed, one or more per record
- GPS / location present
- Yes — WGS84, with coordinateUncertaintyInMeters
- Reviewer status
- Two-person reviewed and locked
- Export format
- Darwin Core Archive (DwC-A ZIP)
Not a final certification report. A structured evidence pack for review, discussion and internal reporting.
Stage 03 of 04 · Over time
See how a green space changes over time
JoinEcoGrow helps teams keep photos, notes, location and reviewer status together across repeat visits.
Spring
Baseline
First site record captured with photo, location and condition note.
Summer
Activity
Biodiversity activity, pollinator planting or tree condition update added.
Autumn
Review
Records reviewed and an evidence pack exported for discussion.
Winter
Planning
Site learning supports next season’s maintenance or biodiversity actions.
Illustrative example of repeat-visit record keeping. Seasons shown for context only — 4 of 4 panels use dedicated seasonal photography.
Stage 04 of 04 · Site map
A clearer view of what has been recorded
Photos, location, notes and reviewer status held together on the map. Capture is not verification: a different person still reviews the record.
ApprovedNeeds reviewEvidence gap
Tree #TR-014 · Oak
Approved- Photo presentYes
- Location savedYes
- Condition noteYes
- Reviewer statusHuman-reviewed
Select a pin to inspect its record. Approximate demo data — not a live deployment.
03Proof
Why you can trust it
Every record is provable, reviewable, and exportable
Every photo is SHA-256 hashed at capture. A different person reviews and approves each record — no self-approval, enforced at the database level. Approved records export as a Darwin Core Archive with EML metadata. Taxonomic identifications carry confidence grades from ai_suggested to expert_verified, with versioned supersede triggers. This is the provenance architecture that biodiversity credit MRV and TNFD-aligned reporting demand.
SHA-256 provenance
Two-person review
Darwin Core standardised
DwC-A exportable
Where we actually are
- UK registered company
- Based in Cardiff
- Product built and live
- Pilot-ready
- Two UK patent applications pending
- Darwin Core Archive export live
- SHA-256 content hashing on every photo
- Two-person review enforced at database level
- GBIF taxon key support
- Taxonomic confidence grades: ai_suggested to expert_verified
- Sensitive-species coordinate generalisation
- Versioned identifications with supersede trigger
- Founder Olakunle Bewaji
No biodiversity credit has been issued on JoinEcoGrow evidence yet. We are early, and we would rather you knew that from us than found it out later. The MRV infrastructure is built, live, and verified against the production database. What is not yet present is real-world credit issuance on our evidence trail — that is the next milestone.
See it for yourself
A Cardiff-shaped example workspace
Have a look around a worked example set up the way a council workspace could be. The data in it is made up for the demo. It is not a live deployment and no contract is implied.
Why now
The world is moving toward verifiable nature data
The biodiversity credit market is projected to reach $22.1B by 2035. 733 organisations representing $22.4T in AUM have committed to TNFD-aligned reporting. BNG is mandatory for UK Nationally Significant Infrastructure Projects from November 2026. The demand for provenance-backed biodiversity evidence is not emerging — it is here.
TNFD (Taskforce on Nature-related Financial Disclosures)
Nature-related disclosures backed by auditable evidence
733 organisations across 56 countries representing $22.4T in AUM have committed to TNFD-aligned reporting. In November 2025 the ISSB decided to standard-set drawing on the TNFD framework, and in April 2026 agreed to propose an IFRS Practice Statement rather than a standard, with due process still under discussion. JoinEcoGrow produces Darwin Core-standardised records with provenance metadata (SHA-256 hashes, reviewer identity, GPS accuracy) that can support TNFD LEAP-aligned nature reporting. JoinEcoGrow is not a TNFD reporting tool — it produces the auditable evidence trail that underpins disclosure.
BCA High-Level Principles (HLP 9: MRV)
Robust MRV with scientific rigour and public audit availability
The Biodiversity Credit Alliance requires that biodiversity credits be supported by robust monitoring, reporting, and verification with scientific rigour, transparency, and public audit availability. JoinEcoGrow provides the MRV infrastructure layer: SHA-256 content provenance on every photo, two-person review with no self-approval, taxonomic identification grades (ai_suggested through expert_verified), and Darwin Core Archive export with EML metadata. The platform does not issue credits — it provides the verifiable evidence trail that credit issuance and audit depend on.
Biodiversity Net Gain (BNG)
Records that can support BNG monitoring for 30 years
Most planning applications in England require a 10% net gain in biodiversity, monitored for 30 years. The NAO found "no standardised, national approach to verifying or recording the verification of biodiversity gains." JoinEcoGrow holds photos, GPS, condition notes, sampling protocol, and reviewer status together as locked, versioned records — the evidence base BNG monitoring requires. It is not a BNG metric calculator and does not produce a statutory net-gain score.
BNG for NSIPs + BSI Flex 702
Verifiable nature-market evidence with provenance
BNG becomes mandatory for Nationally Significant Infrastructure Projects from 2 November 2026 under Schedule 15 of the Environment Act 2021. BSI Flex 702 v1.0 (October 2024) was released for adoption in March 2026 with Defra support. JoinEcoGrow’s provenance model — SHA-256 hashes, immutable locked records, Darwin Core standardisation, and DwC-A export — is built for exactly this regulatory direction.
Summarised for context — always confirm the specific requirements for your site with your own legal or planning advisers.
04Start a pilot
The pilot
Six weeks, one site, and a Darwin Core Archive of your reviewed records
A pilot is a short, measured trial of your own biodiversity monitoring process, run by your team on one site. It ends with a Darwin Core Archive export of your reviewed, locked records — not a slide deck of our numbers.
- How long
- 6 weeks on one site
- Who is needed
- 2 to 4 field users plus one reviewer
- Your time
- Around 6 hours a week
- Cost
- Agreed with you before we start
- What you receive
- A DwC-A export of your reviewed records, plus a baseline report
- 1Week 1
We agree what to measure, which sampling protocols to use, and record your baseline. Those numbers are your before-state.
- 2Weeks 2 to 5
Your team captures biodiversity records on one site. A different person reviews each one. Records are locked on approval.
- 3Week 6
You receive a Darwin Core Archive export of your approved records, plus a report: your baseline, what we measured, and an honest list of what did not work.
Before you ask us anything
Tell us what takes the most time in your green space record keeping right now. Whatever you say is what we measure, and the week six report is written against it.
Not ready for a pilot? A fifteen minute call costs nothing and we will tell you honestly if this is not a fit for your site. Book a call instead.
Start a pilotCommon questions
Asked before every pilot
Straight answers to the questions biodiversity credit developers, ESG teams, and ecology consultants raise first.
Is JoinEcoGrow already issuing biodiversity credits?
No. JoinEcoGrow provides the MRV infrastructure layer — SHA-256 provenance, two-person review, Darwin Core Archive export. The platform does not issue credits. It produces the verifiable evidence trail that credit issuance, verification, and audit depend on. No credit has been issued on JoinEcoGrow evidence yet.
How does this support TNFD reporting?
JoinEcoGrow produces Darwin Core-standardised biodiversity records with provenance metadata (SHA-256 hashes, reviewer identity, GPS accuracy, sampling protocol, taxonomic confidence grades). These records can support the nature-related disclosures that TNFD-aligned reporting requires. JoinEcoGrow is not a TNFD reporting tool — it produces the auditable evidence that underpins disclosure.
What is a Darwin Core Archive?
A Darwin Core Archive (DwC-A) is a ZIP file containing standardised biodiversity data files (event.txt, occurrence.txt, multimedia.txt) plus metadata (meta.xml, eml.xml). It is the international standard for sharing biodiversity data, used by GBIF and the global biodiversity informatics community. JoinEcoGrow exports approved records as DwC-A on request.
Who owns the data our team captures?
Your organisation. JoinEcoGrow processes the records your team creates and claims no ownership over your environmental records, photos, location data, or taxonomic identifications.
Does it replace our ecology consultant or arboriculturist?
No. JoinEcoGrow supports record-keeping and reviewer-friendly outputs. Statutory advice on BNG, planning conditions, BS 5837 categorisation and environmental reporting must continue to come from accredited professionals.
How does pricing work?
Pricing is shaped per organisation based on managed-site count, team size, and reporting scope. The fastest path to a number is a 15-minute briefing.
More detail on hosting, security, accessibility and white-labelling: read the full FAQ
About
Built by a technical founder, shaped with ecology and council feedback
JoinEcoGrow is the trading name of Originative Pool Limited, a UK-registered company based in Cardiff, Wales. The MRV infrastructure is built and live — SHA-256 provenance, two-person review, Darwin Core Archive export, and taxonomic confidence modelling are all deployed to production. The approach is shaped by feedback from ecology and local-authority contacts, including a conservation biology lecturer at a UK university.
Founded by Olakunle Bewaji.
Next step
Pilot JoinEcoGrow on one site
Six weeks on one site, with your team doing the capture. It ends with a Darwin Core Archive export of your reviewed records and a baseline report comparing where you started.
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