Every GramAccounted For.
From mine to vault. Every weighing, every checkpoint, every handoff recorded and verified on-chain.
Bringing transparency to artisanal gold.
Artisanal gold passes through opaque networks before reaching global markets. GRAM creates an unbroken chain of digital custody. Every weighing, every checkpoint, every handoff recorded and verified.
From the mine shaft to the vault, we ensure that responsible sourcing isn't just a claim, it's cryptographic proof.
Opaque Networks
Gold passes through dozens of hands before reaching a refinery. Paper logs vanish. Weights shift. Revenue disappears between checkpoints.
Software Alone Fails
Databases can be edited. Spreadsheets get overwritten. Without cryptographic proof, digital records are just digital paper.
Architecture Over Promises
Most traceability platforms rely on trust. They ask operators to self-report. That is not verification. That is hope with a dashboard.
Seven stages. One unbroken chain.
Mine
Artisanal extraction site. IoT scales capture initial weight; GPS tags the location.
Collection
Comptoir aggregation. Batches are weighed, sealed, and assigned a unique QR identity.
CEEC
Government certification. XRF purity analysis and conflict-mineral compliance checks.
Export
Customs clearance. Weight reconciliation, export permits, and revenue recording.
Refinery
Smelting and assay. Final purity determination and bar casting.
Transport
Secure logistics. GPS-tracked, tamper-proof sealed transit to destination vault.
Vault
Final storage. Bar catalogued, Merkle root anchored on Polygon, trust score finalized.
GRAM ONE
Purpose-built for artisanal mining conditions. Every weighing is cryptographically signed, GPS-tagged, and transmitted to the VLOG in real time.
Cryptographic certainty.
Hash Chaining
entry[n].hash = SHA-256( entry[n].data + entry[n-1].hash )
Every VLOG entry includes the hash of the previous entry. Tampering with any record breaks the entire chain, instantly detectable.
Merkle Tree
root = hash( hash(entry[0], entry[1]), hash(entry[2], entry[3]) )
All entry hashes in a batch form a binary Merkle tree. The single root hash represents the entire batch, with verification in logarithmic proof size.
Polygon Anchor
GramAnchor.anchor( merkleRoot, batchId, entryCount )
The Merkle root is published on Polygon: an immutable, publicly verifiable proof that the batch data existed at a specific point in time.
Trust Score
Every batch receives a computed trust score from 0 to 100, based on four weighted dimensions. Higher machine-to-human data ratio, complete attestations, unbroken hash chains, and consistent weight readings all contribute to a higher score.
Seven views. One truth.
Internal Ops
Full pipeline visibility. Manage batches, operators, devices, and compliance from a single dashboard.
Central Bank
Real-time gold flow data. Reserve tracking, export volumes, and revenue reconciliation at a glance.
Ministry of Mines
Operator licensing, site monitoring, and production analytics across all registered mining zones.
Customs
Export clearance verification. Weight reconciliation, permits, and cross-border movement tracking.
Treasury
Tax and royalty collection. Automated revenue recording tied to verified gold movements.
Banking
Due diligence and compliance data. Know-your-source documentation for responsible gold financing.
Public
Anyone can scan a QR code and verify a batch. Trust score, full chain of custody, blockchain proof.
What nobody else combines.
Sovereign by Design
Data stays in-country. A dedicated node in a local Tier-III data center ensures national sovereignty over gold traceability records.
Crypto-Physical Security
Tamper-proof hardware, mutual TLS, secure boot. Every device is a trust anchor. No human presence required at verification points.
Trust Score
A 0-to-100 composite score combining machine data ratio, attestation coverage, chain integrity, and weight consistency. Quantified, not claimed.
ASM-First
Built for artisanal and small-scale mining from day one. Not an enterprise system retrofitted for field conditions.
Tokenisation-Ready
The verified data layer that future gold-backed tokens require. Provenance is the prerequisite. We build the foundation.
Government Partnership
Designed to work alongside ministries and regulatory bodies. Multi-tenant access with role-based views for every institution.
Built by operators.
Rafael Papismedov
Co-Founder
Shai de Toledo
Co-Founder