OpenChainGraph Suite · CONTRACT A3 · arch #5

Crypto-Asset Tax Reporting (CARF / DAC8 / 1099-DA)

Note (dated 2026-08-04): a chain composes independent computations performed in an analytical order. No step's output is carried into the next step by the execution model; each step computes from its own declared inputs. This is true of every chain on this site, including chains whose per-step copy below reads as a data handoff.

CARF/DAC8 reportable classification > cost-basis and gain/loss calculation > IRS Form 1099-DA assembly > CASP readiness scoring.

OpenChainGraph · 4 Steps compliance mandate Hash-Anchored §4 chain_depth:4 Client-Side · Zero PII
Chain Topology — Carf Dac8 Reportable Classifier → Crypto Cost Basis Gain Calculator → Form 1099 Da Generator → Casp Tax Reporting Readiness Scorer
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Chain Stages · 4 Steps
1 ROOT · D0 catalog
Carf Dac8 Reportable Classifier 465-carf-dac8-reportable-classifier
reportable_users and reportable_txns feed Stage 2 basis calc
↓
2 D2 catalog
Crypto Cost Basis Gain Calculator 466-crypto-cost-basis-gain-calculator
gain_loss_schedule feeds Stage 3 1099-DA assembly
↓
3 D3 catalog
Form 1099 Da Generator 467-form-1099-da-generator
filing_records feed Stage 4 readiness scoring
↓
4 TERMINAL · D4 catalog
Casp Tax Reporting Readiness Scorer 468-casp-tax-reporting-readiness-scorer
Exports crypto-tax reporting Policy Mandate, final stage
▶ Run this chain (live) browser · real execution · composite §4 hash
Export Artifacts
Download the §4 chain definition artifact (hash-anchored composite JSON) or the §13.11 W3C Verifiable Credentials view. Both derive from the chain definition — no new hash is minted. Available after hash computation.