What We Build
Real infrastructure. Deployed. Working.
provable.info
Provable Data Integrity on BSV Blockchain
A data integrity platform that seals documents, files, and data to the BSV blockchain — creating tamper-proof, independently verifiable proof that content existed in a specific state at a specific time.
Not a promise. A mathematical proof.
Integration Paths
Three ways to seal data to the blockchain
REST API
Generic seal API for any application
- Upload files or pre-computed hashes
- Server-side SHA-256 hashing (max 50MB/file)
- HTTP 402 micropayment flow: submit → invoice → pay BSV → sealed
- Pricing: 2,500 sats (~½p) per seal
- Verify always free
Endpoints
POST /api/v1/sealPOST /api/v1/verifyPOST /api/v1/seal/documentOffice 365 / SharePoint
Enterprise document sealing
- Auto-seal on create/modify via Microsoft Graph webhooks
- Power Automate connector with custom actions
- SPFx extension for SharePoint document libraries
- 3 free seals/day per tenant, then paid
AI Agent Skills
Skill integrity for the agent economy
- provable CLI (Go, single binary) for publishing and verifying agent skills on-chain
- Skills registry at api.provable.info/api/skills
- Three-layer verification: content hash → Merkle root → BRC-42 signature
- On-chain storage: full skill files compressed and embedded in BSV transactions
Document Decomposer
Granular integrity for Office documents. Know exactly what changed.
Upload
Upload a DOCX, XLSX, or PPTX file
Decompose
Server splits into labelled content elements, seals Merkle root to BSV
Verify
Granular diff report showing exactly what changed
Per-paragraph, per-table, per-image decomposition
Per-row per-worksheet with cell value previews
Per-slide with text extraction
Example Verification Output
“Your contract was sealed on January 15th. Since then, one paragraph in section 3 was altered and cell B12 in the attached financials was changed from £50,000 to £75,000. All 847 other elements are verified intact.”
Metadata parts (editing time, revision count) are excluded — won’t false alarm on open.
Under the Hood
Network
BSV mainnet (testnet for development)
Transaction fees ~$0.00005
Verification
SPV proofs
Merkle proofs + block headers for client-side verification
Wallet Service
Go sidecar
Built with go-wallet-toolbox
Provable CLI
Open source
github.com/noscere-labs/provable-cli
Start Sealing Today
Seal a document for less than a penny. Verify it forever. No account required.