Build a complete evidence chain through multi-node cross-validation
Deploy multiple independent nodes on each chain for cross-validation. Each record includes block height and transaction hash, is traceable back on-chain, and preserves a full audit trail for every data source.
Multi-node cross-validation
ETH · 19,842,116
Transaction record0x7a91…c42e
Node A
Matched
Node B
Matched
Node C
Matched
Cross-check matched · output approved
Validate before output. Deploy multiple independent nodes for each public chain and output data only after cross-check consistency.
Trace record to on-chain source
REC-0042
Transaction hash0x7a91…c42e
Block height19,842,116
SourceEthereum
Record
0x7a…
Block
19,842,116
Source
ETH
On-chain trace verified
Trace every record to source. Each record includes block height and transaction hash and can be traced back to original on-chain data.
Retained audit context
WP-EV-042
Evidence IDSRC-ETH-20260331-018
Data sourceEthereum Mainnet
Retrieved2026-07-11 16:24 UTC
Validation nodes3 / 3
Attaching to workpaper100%
Source context archived
Preserve the audit context. Retain data source, retrieval time, and validation node information for inclusion in audit workpapers.
Workpaper Output
Batch data extraction aligned with audit workpapers
Output directly in audit workpaper format, requiring no secondary processing and ready for download and archiving.
Period-end reconciliation
30 JUN 2026
WalletBTCETHSOL
bc1q…a7f31.2456789012.34567884.320000
0x8f…3b1c0.512345678.76543216.750000
TQ9e…d2f40.100000000.2500002.125000
Total1.85802521.3611103.1950
Confirmation bundle
SHA-256
sealed
Wallets matched
Balances reconciled
Evidence packaged
Confirmation letter format · archive ready
Confirm period-end balances. List balances by address and period in a format aligned with confirmation letters.
Transaction trace
3 EVENTS
14:32:10 UTC
+0.250 ETH
0x9a…7e3d → 0x1a…c7d9
0x1a…c7d9
Network
Ethereum
Gas used
21,000
Block
22,149,805
Status
Confirmed
15:47:22 UTC
-0.120 ETH
0x4b…2d1f → 0xa7…b8e1
0xa7…b8e1
Network
Ethereum
Gas used
21,000
Block
22,149,805
Status
Confirmed
16:21:05 UTC
+0.070 ETH
0x7e…5a9c → 0x1d…9f2b
0x1d…9f2b
Network
Ethereum
Gas used
21,000
Block
22,149,805
Status
Confirmed
Trace ready for workpaper
Show every relevant field. List timestamp, amount, counterparty address, and transaction hash for each transaction.
Extraction evidence
EV-904512
Block height904,512
Validation nodefinTax-node-01
Retrieved at2026-06-29 16:21 UTC
Evidence attached to workpaper
Make extraction verifiable. List block height, validation node, and data retrieval time.
Multi-Chain Coverage
Multi-chain data extraction with reproducible exchange-rate benchmarks
Natively support 70+ public chains, multiple asset types, any historical point in time, and multi-source pricing for reproducible exchange-rate benchmarks.
Chain coverage
COVERAGE
Ready to audit
Fully indexed
+
100%
30+ chains
Currently indexing
Validation in progress
+
68%
25+ chains
On the roadmap
Next indexing wave
+
22%
20+ chains
Audit landscape indexed
Cover the chain landscape. Completed: BTC, ETH, DOGE, LTC, and Kaspa; Tron is in progress; BNB, Base, and SOL are pending.
Complete asset surface
4 TYPES
Coverage
4 / 4
Verified
Native tokens
ETHBase asset
Chain-standard tokens
USDCToken standard
NFT
ERC-721Unique asset
DeFi positions
AaveProtocol position
Stablecoins
USDTSettlement asset
Liquidity tokens
LPPool receipt
Asset records12.4K
Token standards7
Protocols48
Last index12 min
All asset categories indexed
Cover the full asset surface. Support native tokens, chain-standard tokens, NFTs, and DeFi protocol-level positions.
Reconstruct historical position
ETH
Historical query
Address
0x8F21…A04C
Historical time
2026-03-31 23:59 UTC
Target snapshot
22,149,805
ETH · 128.4200
Verification evidence
Block header
0x7e3b…d91f
Account state
0x9a12…4b7c
Storage proof
0x2c55…8f31
Historical state reconstructed
Reconstruct historical positions. Query address balances and transaction details for any historical date, with block height and retrieval time marked.
Reproducible ETH/USDT benchmark
2026-03-31
Verified sources
Binance
$3,421.80
OKX
$3,424.10
Bybit
$3,419.60
Best verified price
$3,419.60
ETH / USDT
Price attestation
Spread0.13%
Snapshot2026-03-31
Point-in-time benchmark reproducible
Make valuation repeatable. Multi-source price integrations provide median cross-source exchange rates, point-in-time snapshots, and reproducible results.
FAQ
Audit questions
Audit deploys multiple independent nodes on each chain for cross-validation. Each record includes block height and transaction hash, can be traced back on-chain, and retains source, retrieval time, and validation node information.
Audit can output balance confirmations, transaction details, and data source evidence directly in audit workpaper format, so files can be downloaded and archived without secondary processing.
Audit is positioned for broad multi-chain coverage, including completed support for BTC, ETH, DOGE, LTC, and Kaspa, with Tron in progress and BNB, Base, and SOL pending. Coverage can include native tokens, chain-standard tokens, NFTs, and DeFi protocol-level positions.
Audit can use multi-source price integrations, median cross-source exchange rates, point-in-time snapshots, and preserved retrieval context so valuation references can be reproduced and reviewed.
Next step
Where would you like to go next?
Explore another FinTax product, speak with our team, or learn more about the people and insights behind our work.
BTC
ETH
SOL
+
+
