Battery packReg. (EU) 2023/1542
Recycled cobalt16 %· min. 16 %Compliant
- Suppliernot disclosed
- Quantitynot disclosed
- Pricenot disclosed
- not disclosed
Prove the threshold.
Keep the recipe.
One verdict a notified body can check: the recycled-content minimum is met. Suppliers, quantities and prices never leave your device.
Compliant· suppliers and quantities not disclosed
Everything the passport shows.
Suppliers
Kept confidential. Never published.
- ≥16
Recycled cobalt
Meets the 16 % legal minimum.
Checked
On your own systems. Nothing uploaded.
- 8
Deliveries
Eight counted, each only once.
Compliant
Reg. (EU) 2023/1542
A hallmark says the metal meets the standard. It never says which mine it came from.
STRICKLE does the same for recycled content. Your suppliers sign what they delivered, the sum is checked against the legal minimum on your own systems, and only the result goes into the passport. Anyone can re-check that result. Nobody can read your bill of materials.
The regulation asks for both.
Regulation (EU) 2023/1542 makes your recycled-content share public, requires the supplier records behind it, and asks you to protect confidentiality without saying how.
Annex XIII
point 1(e)
recycled content information as contained in the documentation referred to in Article 8(1)
Public. Anyone who scans the QR sees the share, competitors included.
Art. 49(2)
points (b) and (d)
the name and address of the supplier […] the quantities of the raw material present in the battery placed on the market
The evidence behind that share names every supplier and every quantity.
Art. 52(2)
with due regard for business confidentiality and other competitive concerns
The instruction to protect it. No method for doing so.
Four dates.
- Battery passport becomes mandatoryArt. 77(1)unchanged
- Rules on who may read the passportArt. 77(9)delayed
- Recycled-content declaration dueArt. 8(1)moves with the delegated act
- Minimums become binding · 16 % Co · 85 % Pb · 6 % Li · 6 % NiArt. 8(2)unchanged
How a certification runs.
Battery pack sliding out from under the car
Three screens. Three roles.
- 01supplier sealed1 240 kg214 kg
- 02supplier sealed980 kg171 kg
- 03supplier sealed1 105 kg162 kg
- 04supplier sealed760 kg140 kg
- 05supplier sealed1 310 kg201 kg
- 06supplier sealed1 020 kg158 kg
- 07supplier sealed890 kg152 kg
- 08supplier sealed1 175 kg190 kg
Checking · 00:00
The bill of materials never leaves this device.
The public passport
STRICKLE
Battery model BX-27
Compliant
Meets the 16 % minimum · Regulation (EU) 2023/1542
- Material
- Cobalt
- Minimum
- 16 %
- Deliveries counted
- 8
- Suppliers
- not disclosed
- Quantities
- not disclosed
Verified on Midnight
Request one field
Recycled share
17.2 %
checked against the 16 % minimum
- Recycled sharedisclosed
- Deliveries counted
- Signing keys
One field per request. The request itself is on record.
Example data. BX-27 is a fictional model; the figures illustrate the screens, not a real certification.
What is public. What stays yours.
Public · in the passport
- Battery model
- BX-27
- Material
- Cobalt
- Legal minimum
- 16 %
- Result
- Compliant
- Signing keys
- 8, all registered
- Deliveries counted
- 8
Everything on the left can be checked by anyone. Everything on the right stays on your systems, and is still counted correctly in the result.
Private · on your systems
- Supplier names
- kept by you
- Quantities per delivery
- kept by you
- Recycled mass per delivery
- kept by you
- Prices
- kept by you
- Who supplies whom
- kept by you
What this does not do.
It does not make a supplier's figures true.
A signed delivery proves who declared it and that it is counted once. A false declaration is still false, but it is now attributable to a named, registered key.
It does not hide who supplies you from a determined observer.
The figures stay sealed. The pattern of who signs, and how often, can still be studied. Reducing that is planned work, and we say so.
It runs on your systems, so your systems must be trusted.
The check happens on the machine you run it on. That machine sees your bill of materials. Nobody else does.
Before the audit.
Is this another platform we upload supplier data to?
No. The bill of materials stays on your systems. Only the result enters the passport, and that result can be re-checked by anyone without trusting us.
Would a notified body accept this?
The result is public and independently verifiable, and the body can request one field at a time on top of it. Acceptance is the body's call; the memo sets out the argument article by article.
What does my supplier have to do?
Sign one declaration per delivery with a key registered under the scheme: total mass and recycled mass. Nothing else leaves their side.
Does this replace CMRT and EMRT?
No. It sits after them. The figures you already collect become signed deliveries, and the sum becomes the passport result.
What if STRICKLE disappears?
The method is open and documented. Results already issued keep verifying without us.
Does my team need wallets or crypto expertise?
No. Fees are handled by the registry operator. Your team uploads the signed deliveries, presses Certify and reads the result.
Technical memorandum · 2026
Prove the threshold.
Keep the recipe.
- 1 · What the regulation asks
- 2 · How the check works
- 3 · What the auditor sees
- 4 · What it does not protect
- 5 · How it was tested
Suppliers and quantities not disclosed
Take the memo to your committee.
Eight to twelve pages for your committee and your notified body: what the regulation asks, how the check works, what an auditor sees, what it does not protect, and how it was tested.
Download the memo (PDF)In preparation. This link will carry the file.
For your technical reviewers.
- Source codenot yet public
- The contractnot yet public
- Test suitenot yet public
Public test-network address · pending deployment