Level 1 · Self-declared0/4 steps with a photo, inspected on site on 14/09/2026
0/4steps with photo evidence
100%logged within 24 h
0withholding / cross-check violations
💡 Tap dotted words for a plain-language definition
Why is the lot at this level? Show details ▾
✓Lot start event recorded (15/08/2026)
✓Harvesting event recorded
20/4 steps requiring evidence have a photo (0%, ≥ 90% required)
✓100% of events logged within 24 hours (≥ 80% required)
✓All 3/3 required steps recorded
✓100% of events have GPS inside the production site (≥ 80% required)
✓Plausibility checks: 11/11 passed
✓No withholding-period breach and no banned inputs used
✓Inspected on site by Hộ Nguyễn Thị Hoa (mẫu) on 14/09/2026
✓Laboratory test passed (Dư lượng thuốc BVTV (nhóm lân hữu cơ, cúc tổng hợp), Trung tâm Kiểm nghiệm ATTP Hà Tĩnh (mẫu))
The level is computed by the system from the recorded data; the farm cannot set it. This platform records evidence — it does not warrant product quality.
Product
Lot code
NTH-RAU-2608-02
Started
15/08/2026
Harvested
15/09/2026
Packed
16/09/2026
Best before
21/09/2026 (estimated)
Process template
🥬 Leafy vegetables · version 1
Where it was produced
Producer
Hộ Nguyễn Thị Hoa (mẫu)
✓ Documents checked
Legal documents have been checked; no site visit yet.
Verified against: Tax code · Business registration number · Food-safety certificate · GLN (GS1 location code)
Approved by: Quản trị nền tảng · on 24/09/2026 · valid until 2027-07-18.
This tick means the business exists and its documents were checked — it is not a guarantee for any individual lot.
Location
Xã Xuân An, Huyện Nghi Xuân, Tỉnh Hà Tĩnh
Field / barn
Luống 3 · 400 m²
Cooperative member
HTX Nông nghiệp Xuân An (mẫu)
Location is shown only down to commune level to protect the farm household’s privacy.
Documents
Certificates and pesticide-residue test reports uploaded by the producer. Tap to view the full image.
🔬
Laboratory test: Dư lượng thuốc BVTV (nhóm lân hữu cơ, cúc tổng hợp)
Pass / valid
Trung tâm Kiểm nghiệm ATTP Hà Tĩnh (mẫu) · Pass · Report KN-2609-207 · 13/09/2026
🏅
Certificate: VietGAP
Pass / valid
No. VietGAP-2026-0148 · Trung tâm Chứng nhận Phù hợp (mẫu) · valid until 06/02/2028 · 25/08/2026
Journey after harvest
This lot: 350 packages, distributed to 4 locations in Xuân An, Nghi Xuân, Hà Tĩnh; Nghi Xuân, Hà Tĩnh; TP Vinh, Nghệ An.
About 59% sold · 1 supermarket, 1 school kitchen, 1 market stall, 1 distributor / trader. Shop names are not published.
0/4 shipments confirmed by the receiving point
40still at the farm
50in transit
50on the shelf
205sold to consumers
5 packages discarded or returned.
Breakdown by receiving point (4)
Supermarket · Xuân An, Nghi Xuân, Hà Tĩnh
35 packages on the shelf · 85 packages sold
School kitchen · Xuân An, Nghi Xuân, Hà Tĩnh
80 packages sold
Market stall · Nghi Xuân, Hà Tĩnh
15 packages on the shelf · 40 packages sold · 5 packages discarded/returned
Distributor / trader · TP Vinh, Nghệ An
50 packages in transit
Shop names are not published — only the type of outlet and the area.
Measured conditions at the production site
This data runs alongside the farm’s own log, and every figure states its source. Weather taken from the site’s coordinates and satellite imagery is independent — the farm neither enters nor edits it. For sensors, the page states who holds the device key (farm or cooperative); readings the farm measured itself are marked ✍️ Self-reported.
🌧 773 mm · 28 rainy days🌡 23–36 °C💧 mean humidity 81%☀️ 229 hours of sunshine33 days
🌦 Dịch vụ thời tiết (Open-Meteo)Rainfall (mm/day)Mean temperature, low–high band (°C)Days the farm logged work
🛰 Vệ tinh Sentinel-2Site greenness (NDVI) — 10 m per pixel○ = image obscured by cloud
🛰 For referenceKhu nhỏ hơn 500 m² (dưới 5 điểm ảnh 10 m) — chỉ hiển thị để tham khảo, không chấm điểm. A reference signal only; it never lowers the lot’s level automatically.
🛰 Bản đồ độ phủ xanh · lưới 10 m
1 ảnh vệ tinh ít mây trong thời gian của lô
↑ Bắc
100 m · mỗi ô 10 m
Chạm vào một ô để xem NDVI.
Ảnh ngày 03/09/2026 · mây 3,7%
0,45NDVI trong khu (vòng nét đứt) ·Đang phát triển Cả vùng quanh khu: 0,49
Đất trống / nước2,5%
Cây thưa23,6%
Đang phát triển48,4%
Dày, xanh tốt25,5%
-0,200,20,40,60,81
Mây, sương mù, bóng mây
Mặt nước
Không có dữ liệu
Vòng tròn nét đứt: khu sản xuất theo diện tích đã khai. Mỗi ô 10 m × 10 m, ô gạch chéo là mây hoặc sương mù (không đo được). NDVI càng cao cây càng xanh, dày. Ảnh Copernicus Sentinel‑2 (ESA).
Data table (33 days of weather, 1/4 usable satellite images)
Date
Rainmm
Temperaturelow–high °C
Humidity%
Sunshinehours
NDVI
16/09
12,2
24,6–29,4
90
1,4
15/09
41,8
23,5–27,1
94
0
14/09
50,1
24,9–27,1
88
0,5
13/09
85,2
23,9–27,3
85
0,2
12/09
24,4
23,1–28,5
80
0,6
11/09
41,9
23,1–28,2
86
8,1
10/09
15,3
23,4–30,4
81
11,5
09/09
1,6
25,6–32
81
11,8
cloud
08/09
1,2
25,2–31,8
81
12
07/09
1
25,1–31
80
12
06/09
3,8
24,9–29,9
82
12
05/09
7
24,5–30,6
84
12
04/09
4,4
25,5–32,8
82
12
cloud
03/09
0
25,6–33,5
73
12
0,46
02/09
0
26,2–33,2
71
12
01/09
2,6
26,1–34,2
73
10,1
31/08
20,5
25–30,6
83
2,3
30/08
38,4
25,8–28,5
90
0,8
29/08
3
26,1–34,1
70
10,6
28/08
2,8
27,2–33,9
74
10,4
27/08
0,5
27–35,2
77
12
26/08
0
27,4–33,9
76
9,8
25/08
89,3
25,4–30,3
89
0
24/08
89,8
25,5–29,4
87
0
23/08
1,1
27,2–32,5
68
1
22/08
0
28,4–33,7
65
6,4
21/08
49,8
25,1–30,3
85
2,2
20/08
74
25,2–29,4
92
1,3
19/08
81,3
25,1–28
94
0
18/08
18,6
26,1–33,6
79
10,1
17/08
3
28,7–36,1
68
12
16/08
2,6
26,6–35,6
75
10,8
15/08
5,4
26,5–34,5
82
11,4
cloud
Sources: weather for the site’s coordinates from Open-Meteo (model grid ≈ 10 km); satellite imagery Sentinel-2 (Copernicus, atmospherically corrected — level L2A; retrieved from AWS Open Data) — scene IDs: S2A_48QWF_20260903_0_L2A, S2C_48QWF_20260904_0_L2A, S2B_48QWF_20260909_0_L2A.
Side-by-side timeline · newest first
Left: what the farm recorded. Right: weather, satellite imagery, sensors and self-reported readings for the same day — placed side by side so the two can be checked against each other.
Sources on the right:🌦 Dịch vụ thời tiết (Open-Meteo) · 🛰 Vệ tinh Sentinel-2 · ✍️ Tự khai = measured by the farm, not independently verified.
Recorded by Farm owner · recorded 20:03 23/09/2026 · event receipt
↩️
Discard / return
#17
19:51 22/09/2026
5 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 22/09/2026 · event receipt
💰
Sold
#16
19:51 21/09/2026
40 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 21/09/2026 · event receipt
🏪
Receiving
#15
03:03 20/09/2026
60 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 03:15 20/09/2026 · event receipt
🚛
Shipping
#14
19:51 19/09/2026
60 packages — Market stall · Nghi Xuân, Hà Tĩnh
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 19/09/2026 · event receipt
💰
Sold
#13
19:51 20/09/2026
80 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 20/09/2026 · event receipt
🏪
Receiving
#12
03:03 19/09/2026
80 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 03:15 19/09/2026 · event receipt
🚛
Shipping
#11
19:51 18/09/2026
80 packages — School kitchen · Xuân An, Nghi Xuân, Hà Tĩnh
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 18/09/2026 · event receipt
💰
Sold
#10
19:51 19/09/2026
85 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 19/09/2026 · event receipt
🏪
Receiving
#9
03:03 18/09/2026
120 packages
📍 GPS inside the site
Recorded by Farm owner · recorded 03:15 18/09/2026 · event receipt
🚛
Shipping
#8
19:51 17/09/2026
120 packages — Supermarket · Xuân An, Nghi Xuân, Hà Tĩnh
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 17/09/2026 · event receipt
📦
Initial packing & labelling
#7
19:51 16/09/2026
Packages
350 pkg
Net weight per package
0.5 kg
Packages per case
25 pkg
Packaging
Túi lưới 0,5 kg
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 16/09/2026 · event receipt
🌾
Harvesting
#6
19:51 15/09/2026
Quantity (kg)
182 kg
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 15/09/2026 · event receipt
💧
Irrigation
#5
19:51 06/09/2026
Water source
Borehole
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 06/09/2026 · event receipt
🧺
Fertilizing
#4
19:51 31/08/2026
Fertilizer
14
Quantity
9 kg
Method
Top dressing
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 31/08/2026 · event receipt
💧
Irrigation
#3
19:51 25/08/2026
Water source
Borehole
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 25/08/2026 · event receipt
🧺
Fertilizing
#2
19:51 18/08/2026
Fertilizer
14
Quantity
14 kg
Method
Basal dressing
📍 GPS inside the site
Recorded by Farm owner · recorded 20:03 18/08/2026 · event receipt
🌱
Sowing / planting
#1
19:49 15/08/2026
Variety
Rau muống nước
Seed source
Trại giống Nghi Xuân (mẫu)
Area
360 m²
Method
Broadcast sowing
📍 GPS inside the site
Recorded by Farm owner · recorded 20:01 15/08/2026 · event receipt
Verify integrity
Every record is sealed with a SHA-256 fingerprint chained to the one before it. Press the button and your own browser recomputes the whole chain — you do not have to trust the server.
Last anchor: 25/09/2026 · Merkle root 7338c0371367471e…
· Trang công khai: confirmed · OpenTimestamps (Bitcoin): confirmed (download .ots)
Plausibility cross-check
11 checks: 11 passed
Cross-checks lot counts, package counts and weights against the area farmed and the stock placed.
360 m² · thu 182 kg · đóng 350 gói (175 kg) · đã xuất 310 gói
Area & yield
✓Passed:
Sown area vs site areaGieo 360 m² trong khu rộng 400 m².
✓Passed:
Yield vs sown area182 kg thu 1 lứa trong 0 ngày trên 360 m² — tối đa 1.800 kg (5 kg/m² lứa đầu + 0,25 kg/m²/ngày tái sinh).
✓Passed:
Whole-site output (90 days / 12 months)Cả khu thu 182 kg trong 12 tháng (1 lô) — tương đương 3 m², khu 400 m².
✓Passed:
Base figures not raised after harvestKhông sửa tăng số liệu gốc sau khi đã thu/xuất.
✓Passed after cooperative verification:
Concurrent lots vs site sizeCùng lúc có 2 lô chiếm 760 m² trên khu chỉ 400 m² (cho phép 620 m²) — HTX đã kiểm tra tại chỗ ngày 14/09/2026.
Timing
✓Passed:
Growing time before first harvestThu lần đầu sau 31 ngày trồng (tối thiểu 10 ngày với rau muống).
✓Passed:
Packed while freshĐóng gói trong vòng 1 ngày sau thu hoạch (tối đa 7 ngày).
✓Passed:
Lot duration31 ngày từ bắt đầu đến lần thu cuối (tối đa 400 ngày với rau muống).
Packing & labels
✓Passed:
Label weight within outputĐóng 350 gói = 175 kg, bằng 96% sản lượng thu 182 kg.
✓Passed:
Labels match declared packages350 tem QR khớp 350 gói đã khai (0,5 kg/gói).
Distribution
✓Passed:
Distribution within packed quantityĐã xuất 310/350 gói tới 4 điểm; bán 205 gói — không điểm nào vượt số được giao.
2 checks not applicable / not enough data
–
Seed / plants support the yieldKhông khai lượng hạt / số cây — không đối chiếu (không trừ điểm).
–
No output after the lot was closedLô chưa kết thúc.
Each threshold is the highest plausible level (roughly twice the best published yield), not an average. Yellow “!”: worth noting. Orange “!”: capped at level 1 until a cooperative officer inspects on site. Red “!”: a violation. Detail line kept in the original Vietnamese record.
How do you know this has not been altered?
Every time something is logged, the system computes a “digital fingerprint” from the text and the photos — change a single character and the fingerprint changes completely.
Those fingerprints are chained together and, at the end of each day, combined into one root hash that is published openly on the blockchain-anchor page.
This lot’s root hash has been written into Bitcoin (block #968542), so no one — not even Nguồn Xanh — can backdate it.
You can check it yourself: press “Verify now” and your own phone recomputes the whole chain and compares it with the published root hash.
To check without trusting us at all, also press “Verify on Bitcoin”.
Anchoring only shows the log has not been altered after it was written. It does not prove that what was written is true — see the confidence level at the top of the page.
See how it works in 4 steps
1
Each entry gets a fingerprint
The type of work, date and time, text and original photos of each record are hashed into one digital fingerprint. Change a single character and the fingerprint is completely different.
2
Records are chained together
Every record carries the previous record’s fingerprint, forming a hash chain. Quietly change one character and the chain breaks.
3
End of day: combined and published
At the end of each day (around 23:55–23:59) the fingerprints of all lots with new records are combined into one Merkle root and published on the blockchain anchor page. If the server is down, the anchor is made when it restarts.
4
Written into Bitcoin — cannot be backdated
The root is submitted free of charge through OpenTimestamps into Bitcoin. This root is already in a block: no one — not even Nguồn Xanh — can backdate it.
Spotted wrong information, a suspicious label, or a problem with the product? Your report goes to the producer, the cooperative and the platform administrator.
Nguồn Xanh