---
title: Strata (Decision Memory & Provenance)
category: History & Merging
icon: 🧠
sort_order: 25
excerpt: Strata 2.0 turns your notes, meetings, and captured documents into a durable, source-backed decision record. It remembers why decisions were made, tracks how context changes over time, and highlights contradictions b…
slug: strata-decision-provenance
canonical_url: https://phasoric.com/guides/strata-decision-provenance
markdown_url: https://phasoric.com/guides/strata-decision-provenance.md
---
# Strata 2.0 (Decision Memory & Provenance Graph)

Strata 2.0 turns your notes, meetings, and captured documents into a durable, source-backed decision record. It remembers why decisions were made, tracks how context changes over time, and highlights contradictions before they impact your work.

## Decision Lifecycle

1. **Detection & Candidate Extraction**: Phasoric scans notes for explicit decision markers (e.g., `Decision:`, `Approved:`), extracts items from meeting transcripts, or proposes candidates during research.
2. **User Confirmation**: Candidates appear in your Strata queue. You can confirm, edit, postpone, or reject proposals.
3. **Durable Decision Record**: Confirming a candidate creates an immutable revision and durable decision record.
4. **Change Monitoring**: Strata monitors source notes. Edits or rewrites trigger change signals rather than silently rewriting decision history.
5. **Review & Supersession**: Mark decisions as active, superseded, rejected, or archived as requirements evolve.

Confirmed decisions also participate in the shared trusted knowledge ledger. Confirmation records a **Reviewed** source fingerprint; reaffirmation can advance it to **Verified**; source drift becomes **Changed**; review deadlines become **Stale**; and supersession preserves the former record as **Superseded**. Decision workflow status and trust status remain separate fields.

## Block Fingerprinting & Provenance

- **Stable Block Hashing**: Every decision source is tracked using a stable block content fingerprint and surrounding context hashes rather than a volatile line number.
- **Relocation & Detached Links**: Moving a block within a note maintains provenance automatically. If a source is substantially rewritten or deleted, Strata flags the reference as *detached* for user review.

## Decision Relationships

Link decisions to construct a rich decision graph using defined relation types:
- `supersedes`: Explicitly replaces a former decision.
- `contradicts`: Flags logical tensions between conflicting statements.
- `depends_on`: Maps prerequisites and dependencies.
- `implements`: Links actionable decisions to delivery artifacts.
- `informs`: Connects background evidence or research notes.
- `duplicates`: Merges duplicate decision proposals.

## Team Decision Review

For Team & Collaboration plan users, Strata provides shared review queues and approval workflows:
- Submit proposed decisions for team review.
- Assign decision owners and stakeholders.
- Maintain a complete, immutable decision audit log across shared vaults.

## One-Click Decision Register Export

Click **`Export Register`** in the Strata header to generate a styled, portable Markdown decision ledger (`decision_register_YYYY-MM-DD.md`).
- **Structured Report**: Includes decision text, status, owner, review date, source note link, line number, provenance fingerprint, and relationship graph.
- **Export Formats**: Ideal for client deliverables, executive leadership updates, and audit compliance.