BalanceSeal Specification

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BalanceSeal

Close with certainty.

BalanceSeal is an AGPL 3.0+ licensed, modular audit and final-account reconciliation component for cryptocurrency exchanges, custodial wallets, digital asset platforms, and other systems that maintain cryptocurrency balances.

BalanceSeal establishes a complete and verifiable record of an account’s financial state at the exact moment of termination. It accounts for transferable balances, non-transferable balances, dust, locked assets, pending balances, accrued amounts, and other cryptocurrency holdings that may otherwise be excluded from a conventional withdrawal or account-closing calculation.

The system produces a deterministic final-state snapshot containing the exact quantity of each recognized asset and its corresponding value at the termination timestamp. It is designed to make the final disposition of an account independently auditable rather than relying solely on an exchange or wallet’s user-facing withdrawal balance.

Purpose

Cryptocurrency platforms can contain balances that users cannot transfer because of minimum withdrawal requirements, network fees, trading restrictions, account thresholds, or other platform limitations. These residual balances can retain economic value even when they cannot be withdrawn individually.

BalanceSeal addresses this accounting gap by separating what an account contains from what an account is permitted to transfer.

At termination, BalanceSeal records the complete account state before closure and identifies the assets and quantities that remain. The resulting report provides a complete accounting of the assets associated with the account, including residual dust and other amounts that might otherwise be excluded from a final withdrawal calculation.

Design Principles

BalanceSeal follows these core design principles:

Complete asset accounting
Exact quantity preservation
Time-specific valuation
Deterministic calculations
Cryptographic integrity
Transparent reconciliation
Read-only integration by default
Modular architecture
Chain and platform neutrality
Vendor-neutral integration
Verifiable final-state reporting
Separation of asset ownership from transferability
Human-readable and machine-readable reporting
Extensible adapter and plugin architecture
No transaction execution as part of the core system

Core Modules

Account Termination Module

The Account Termination Module manages the lifecycle event that initiates a BalanceSeal snapshot.

Features include:

Account termination event detection
Account closure request handling
Administrative termination events
Automated termination hooks
API-triggered termination snapshots
Pre-termination validation
Termination timestamp capture
Account state freeze coordination
Duplicate termination-event prevention
Termination event identification
Termination status tracking
Snapshot initiation
Finalization state management

Asset Aggregation Module

The Asset Aggregation Module identifies and records every asset associated with the account at termination.

Features include:

Complete cryptocurrency balance enumeration
On-chain balance collection
Off-chain ledger balance collection
Custodial balance collection
Exchange balance collection
Wallet balance collection
Sub-account aggregation
Spot balances
Locked balances
Staked balances
Earn balances
Pending withdrawal balances
Pending deposit balances
Unsettled trade balances
Rewards and accrued balances
Fractional cryptocurrency quantities
Dust balances
Non-transferable balances
Minimum-withdrawal residuals
Asset quantities below platform thresholds
Asset quantities below fiat conversion thresholds
Exact decimal preservation

The module must not exclude an asset solely because it is below a platform’s withdrawal, conversion, or transfer threshold.

Asset Identity Module

The Asset Identity Module establishes a consistent identity for every asset recorded by BalanceSeal.

Features include:

Native cryptocurrency identification
Token identification
Contract address identification
Blockchain network identification
Token standard identification
Wrapped asset identification
Bridged asset identification
Network-specific asset identifiers
Symbol normalization
Decimal precision recognition
Asset metadata preservation
Duplicate asset detection
Asset identity validation

Asset identity must distinguish assets that share the same symbol across different networks or contracts.

Ledger Reconciliation Module

The Ledger Reconciliation Module reconciles balances originating from multiple accounting systems.

Features include:

On-chain and off-chain reconciliation
Exchange ledger reconciliation
Custody ledger reconciliation
Wallet reconciliation
Sub-account reconciliation
Pending transaction reconciliation
Trade settlement reconciliation
Deposit reconciliation
Withdrawal reconciliation
Internal transfer reconciliation
Duplicate balance detection
Balance discrepancy detection
Missing balance detection
Reconciliation status reporting
Source attribution
Reconciliation exception reporting
Final reconciliation confirmation

The reconciliation process must identify whether a balance represents the same underlying asset across multiple sources and prevent double counting.

Transferability Classification Module

The Transferability Classification Module distinguishes asset ownership from the ability to transfer or withdraw an asset.

Features include:

Transferable balance classification
Non-transferable balance classification
Dust classification
Withdrawal threshold classification
Conversion threshold classification
Locked asset classification
Staked asset classification
Pending transaction classification
Restricted asset classification
Platform-held residual classification
Transferability reason codes
Transferability status reporting

An asset must remain included in the final account report regardless of whether it is transferable.

Valuation Module

The Valuation Module determines the monetary value of each asset at the exact termination timestamp.

Features include:

Termination-time valuation
Historical market pricing
Asset-specific pricing
Fiat conversion
USD valuation
Configurable base currencies
Price timestamp capture
Price source identification
Price source priority
Historical price retrieval
Market data validation
Missing price detection
Unavailable-market handling
Price precision preservation
Deterministic valuation
Per-asset valuation
Total account valuation

The valuation system must preserve the distinction between the cryptocurrency quantity and its monetary valuation.

Pricing Oracle Interface Module

The Pricing Oracle Interface Module provides a standardized interface for market data sources.

Features include:

Exchange pricing adapters
External market data adapters
Oracle integrations
Internal pricing feeds
Historical pricing providers
Custom pricing providers
Multiple pricing source support
Pricing source fallback rules
Price confidence metadata
Timestamp verification
Price provenance
Pricing discrepancy detection
Configurable pricing policies

Every valuation must identify the source and timestamp of the price used.

Snapshot Module

The Snapshot Module creates the final account state at termination.

Features include:

Exact termination timestamp
Account state capture
Complete asset inventory
Asset quantity capture
Transferability status
Price capture
Asset valuation
Total account value
Source metadata
Reconciliation metadata
Snapshot identifier
Snapshot version
Snapshot status
Immutable snapshot finalization
Snapshot validation

A finalized snapshot must not be silently modified after creation.

Final Balance Module

The Final Balance Module produces the definitive account balance calculation.

Features include:

Total cryptocurrency quantity by asset
Total transferable balance
Total non-transferable balance
Total dust balance
Total locked balance
Total pending balance
Total account value
Asset-by-asset valuation
Residual balance identification
Unresolved balance identification
Reconciliation exceptions
Final balance status

The module must clearly distinguish between the amount an account contained and the amount the platform allowed the user to withdraw.

Historical Account Accounting Module

The Historical Account Accounting Module provides a complete accounting record of assets received and retained by the account.

Features include:

Deposited asset accounting
Received asset accounting
Transferred asset accounting
Purchased asset accounting
Earned asset accounting
Reward accounting
Fee accounting
Withdrawal accounting
Conversion accounting
Internal transfer accounting
Remaining balance accounting
Residual balance accounting
Termination balance accounting
Historical quantity reconciliation
Historical value reconciliation

Where the host platform makes the required historical data available, BalanceSeal should calculate the relationship between assets received, assets removed, and assets remaining at termination.

Report Generation Module

The Report Generation Module creates complete final-account reports.

Features include:

Human-readable reports
Machine-readable reports
Asset inventory
Exact quantities
Asset values
Termination timestamp
Pricing timestamps
Pricing sources
Transferability classifications
Dust identification
Locked balance identification
Pending balance identification
Reconciliation results
Total account value
Report identifier
Report version
Integrity metadata

Supported report formats include:

JSON
CSV
PDF
Structured audit packages

Cryptographic Integrity Module

The Cryptographic Integrity Module protects the final report from undetected alteration.

Features include:

SHA-256 report hashing
Snapshot hashing
Metadata hashing
Integrity verification
Tamper detection
Digital signature support
Public verification
Signature metadata
Cryptographic timestamps
Report fingerprint generation
Verification status

Cryptographic protection must apply to the finalized report and the data required to reproduce its calculations.

Audit Trail Module

The Audit Trail Module records the events involved in producing the final account report.

Features include:

Termination event logging
Snapshot creation logging
Asset collection logging
Reconciliation logging
Pricing event logging
Valuation logging
Report generation logging
Hash generation logging
Signature logging
Verification logging
Error logging
Exception logging
Timestamped event records
Append-only audit records

Verification Module

The Verification Module allows authorized users and external systems to validate a BalanceSeal report.

Features include:

Report hash verification
Digital signature verification
Snapshot verification
Calculation verification
Asset quantity verification
Pricing metadata verification
Report integrity verification
Audit trail verification
Machine-readable verification results
Human-readable verification results

API Module

The API Module provides integration interfaces for host platforms.

Features include:

Account termination endpoint
Snapshot creation endpoint
Snapshot retrieval endpoint
Report generation endpoint
Report retrieval endpoint
Verification endpoint
Asset inventory endpoint
Reconciliation status endpoint
Valuation endpoint
Audit event endpoint
Webhook support
Authentication support
Authorization support
Request validation
Response validation
API versioning

Event Module

The Event Module allows BalanceSeal to integrate with existing account lifecycle systems.

Supported events include:

Account termination requested
Account termination approved
Account termination initiated
Account state frozen
Balance collection completed
Reconciliation completed
Valuation completed
Snapshot finalized
Report generated
Report signed
Report verified
Account termination completed

Security Module

The Security Module provides security controls for BalanceSeal integrations.

Features include:

Read-only integration by default
Least-privilege access
Role-based access control
Authentication
Authorization
Secure credential handling
API access controls
Signing-key isolation
Audit logging
Sensitive-data minimization
Access-event tracking
Configuration validation
Security-event reporting

BalanceSeal must not require transaction signing or asset-transfer authority for its core functionality.

Error and Exception Module

The Error and Exception Module ensures that incomplete or inconsistent data cannot silently produce a misleading final report.

Features include:

Missing balance detection
Missing price detection
Ledger discrepancy detection
Chain data failure detection
Duplicate asset detection
Unsupported asset detection
Stale data detection
Timestamp inconsistency detection
Reconciliation failure reporting
Valuation failure reporting
Report-generation failure reporting
Explicit unresolved-status reporting
Retry handling
Failure audit logging

An incomplete account state must not be represented as a complete final balance without explicitly identifying the unresolved condition.

Deterministic Processing Module

The Deterministic Processing Module ensures that the same validated inputs produce reproducible results.

Features include:

Deterministic calculations
Defined rounding rules
Decimal precision preservation
Stable asset ordering
Stable report serialization
Reproducible valuation
Reproducible hashing
Versioned calculation rules
Calculation metadata
Reproducibility verification

Configuration Module

The Configuration Module controls platform-specific behavior without changing the BalanceSeal core.

Features include:

Base currency configuration
Pricing source configuration
Asset adapter configuration
Chain configuration
Ledger configuration
Reporting configuration
Retention configuration
Security configuration
API configuration
Webhook configuration
Precision configuration
Threshold configuration
Environment-specific configuration

Configuration thresholds must never cause BalanceSeal to omit an asset from the final accounting record.

Optional Plugin Modules

BalanceSeal uses an extensible plugin architecture so additional capabilities can be added without modifying the core accounting engine.

Blockchain Adapter Plugins

Optional blockchain plugins may provide support for:

Bitcoin
Ethereum
Solana
EVM-compatible networks
Layer 2 networks
Additional public blockchains
Private blockchain networks
Custom blockchain systems

Each adapter should expose standardized balance and transaction data to the core modules.

Token Standard Plugins

Optional token plugins may support:

ERC-20
ERC-721
ERC-1155
BEP-20
SPL
Other network-specific token standards

Plugins must preserve the distinction between fungible asset quantities and unique digital assets where applicable.

Exchange Integration Plugins

Optional exchange plugins may connect BalanceSeal to:

Internal ledgers
Custody systems
Account databases
Trading systems
Deposit systems
Withdrawal systems
Internal transfer systems
Rewards systems
Staking systems

Pricing Provider Plugins

Optional pricing plugins may connect to:

Centralized exchange pricing
Market data providers
Decentralized oracle networks
Institutional pricing feeds
Internal exchange pricing
Historical market databases
Custom pricing services

Reporting Plugins

Optional reporting plugins may add:

Extended PDF formats
Accounting exports
Tax reporting formats
Regulatory reporting formats
Enterprise audit packages
Custom JSON schemas
Custom CSV schemas
Data warehouse exports

Compliance Plugins

Optional compliance plugins may provide jurisdiction-specific reporting capabilities.

Features may include:

Jurisdiction-specific report formats
Regulatory data mapping
Record retention workflows
Audit package generation
Compliance metadata
Organization-specific reporting policies

Compliance plugins must remain separate from the core balance accounting system.

Merkle Proof Plugin

An optional Merkle Proof Plugin may provide:

Merkle tree generation
Asset balance proofs
Snapshot proofs
Inclusion proofs
Root hash generation
Independent proof verification

Zero-Knowledge Proof Plugin

An optional zero-knowledge plugin may provide privacy-preserving verification capabilities, including:

Proof of total account value
Proof of asset inclusion
Selective disclosure
Privacy-preserving verification
Verifiable aggregate balances

Digital Signature Plugin

An optional Digital Signature Plugin may provide:

Organization signing
Hardware security module integration
External key-management integration
Public-key verification
Signature rotation
Signature metadata

Immutable Storage Plugin

An optional storage plugin may provide:

Write-once storage
Content-addressed storage
External archival
Distributed storage
Blockchain anchoring
Long-term audit preservation

Notification Plugin

An optional notification plugin may provide:

Email notifications
Webhook notifications
Administrative alerts
User report notifications
Verification notifications
Reconciliation failure notifications

Analytics Plugin

An optional analytics plugin may provide:

Historical account analysis
Residual balance analysis
Dust accumulation analysis
Asset distribution analysis
Termination reporting analytics
Platform-wide reconciliation statistics

Account Termination Workflow

A standard BalanceSeal termination workflow should:

Receive an account termination event.
Capture the authoritative termination timestamp.
Freeze the account state for reconciliation.
Collect all available account balances.
Collect applicable on-chain balances.
Collect applicable off-chain ledger balances.
Identify every asset and exact quantity.
Normalize asset identities.
Reconcile balances across available sources.
Classify transferable and non-transferable balances.
Identify dust and other residual balances.
Retrieve valuation data corresponding to the termination timestamp.
Calculate the value of every asset.
Calculate the complete final account value.
Record unresolved discrepancies and unavailable data.
Generate the final snapshot.
Generate the final report.
Calculate the cryptographic integrity hash.
Apply an optional digital signature.
Store the finalized audit record.
Make the report available through authorized interfaces.
Preserve the verification information required to validate the report.

Final Account Report Requirements

A complete BalanceSeal report should contain, where available:

Account identifier
Termination identifier
Termination timestamp
Report identifier
Snapshot identifier
Report version
Asset identifier
Asset symbol
Network
Contract address
Token standard
Exact quantity
Transferability status
Transferability reason
Dust status
Locked status
Pending status
Price
Price currency
Price timestamp
Price source
Asset value
Total account value
Reconciliation status
Unresolved exceptions
Cryptographic hash
Digital signature metadata when applicable

Historical Balance Accounting

Where historical transaction and ledger data are available, BalanceSeal should provide an extended reconciliation showing:

Total assets received
Total assets purchased
Total assets earned
Total assets deposited
Total assets transferred into the account
Total assets withdrawn
Total assets transferred out
Total assets converted
Total fees deducted
Total rewards received
Total remaining assets
Total residual assets
Final account balance

Historical accounting must preserve asset quantities separately from monetary valuations. Historical fiat values should be tied to the applicable timestamp and pricing source.

Dust Accounting

Dust must be treated as an accounting category rather than an omitted balance.

BalanceSeal should identify:

Asset quantity classified as dust
Reason for dust classification
Value at termination
Transferability status
Minimum withdrawal threshold
Applicable platform restriction
Whether the balance was converted
Whether the balance remained after termination
Whether the balance was included in the final account value

A platform’s inability to transfer a balance must not be treated as evidence that the balance had no value.

Data Integrity Requirements

BalanceSeal must prioritize complete and accurate accounting over convenience.

The system should:

Preserve exact asset quantities
Preserve source data
Preserve timestamps
Preserve pricing provenance
Preserve reconciliation results
Identify incomplete records
Identify conflicting sources
Never silently discard balances
Never silently overwrite snapshots
Never silently change historical valuations
Never represent unavailable data as confirmed data

Privacy Requirements

BalanceSeal should minimize unnecessary personal information.

Implementations should:

Use pseudonymous account identifiers where practical
Limit access to financial records
Avoid storing private keys
Avoid storing unnecessary authentication information
Protect sensitive account data
Apply configurable retention policies
Support secure report access
Separate account identity from balance data where appropriate

Interoperability Requirements

BalanceSeal should be capable of integration with existing systems without requiring a specific exchange, wallet, blockchain, pricing provider, database, cloud platform, or custody provider.

Integration interfaces should use documented and versioned contracts.

The core accounting engine must remain independent from optional external providers.

Testing Requirements

Implementations should include tests covering:

Account termination events
Exact balance capture
Decimal precision
Dust balances
Non-transferable balances
Locked balances
Pending balances
Multi-chain assets
Token assets
Duplicate asset detection
Ledger reconciliation
Historical valuation
Missing price data
Conflicting price data
Reconciliation failures
Deterministic calculations
Report generation
Hash verification
Digital signature verification
API integration
Plugin integration
Security controls
Failure recovery

Documentation Requirements

Implementations should document:

Installation
Configuration
API interfaces
Integration methods
Account termination workflow
Asset adapters
Ledger adapters
Pricing providers
Report formats
Verification procedures
Security requirements
Plugin development
Error handling
Data retention
Deployment requirements

Non-Goals

BalanceSeal does not inherently:

Execute cryptocurrency transactions
Move user funds
Control private keys
Act as a cryptocurrency exchange
Act as a wallet
Determine legal ownership of assets
Guarantee the solvency of an exchange
Guarantee the accuracy of an external data provider
Replace independent accounting or legal review

BalanceSeal is an accounting, reconciliation, valuation, reporting, and verification component.

Future Extensions

Potential future extensions include:

Cross-platform account reconciliation
Proof-of-balance infrastructure
Independent user verification portals
Advanced cryptographic proofs
Zero-knowledge verification
Distributed audit anchoring
Automated regulatory reporting
Enterprise accounting integrations
Long-term archival systems
Public verification registries
Historical asset-flow analysis
Platform-wide residual balance analytics

Specification Branding License (SBL)

Standard

Fully AGPL-3.0+ compliant system
Copyleft enforced for network deployments
Required attribution:
- Roxanne Ardary
- https://www.roxanneardary.com/

Optional

Specification Branding License (SBL)
- Attribution-free commercial deployment
- Pricing based on scale, usage, and deployment scope
- https://roxanneardary.com/balanceseal/

License & Notice Requirements

BalanceSeal is released under the GNU Affero General Public License v3.0 or later (AGPL-3.0+).
By contributing to this project, you agree that your contributions will also be released under this license.

Please note the following:

All contributions must comply with the AGPL-3.0+ terms.
Under Section 7 of the license, all redistributions, forks, and derivative works must preserve attribution to:
- Roxanne Ardary
- roxanneardary.com
BalanceSeal specifications are free to use with attribution. A Specification Branding License can be negotiated upon request.
The project’s notice.md file tracks attribution requirements and contributor acknowledgments. Any update that adds new contributors or modifies attribution should also update notice.md.
When submitting a pull request, ensure that any new files maintain the attribution headers where applicable.
Network-deployed versions of this software must also remain fully AGPL-3.0+ compliant, including exposure of source code modifications when applicable under the license.

For full legal details, please refer to the AGPL-3.0+ license and the project’s notice.md file.

Notice – BalanceSeal

Attribution Requirement: Under Section 7 of the AGPL 3.0+ license, all redistributions, forks, and derivative works, including network-deployed versions of this project, must provide attribution to Roxanne Ardary and roxanneardary.com.

Contributors

This file tracks contributors and their specific contributions to the project.

Roxanne Ardary, roxanneardary.com – April 12, 2026
Created the repository for BalanceSeal. Designed the core concept of a cryptographic account termination and final balance reporting system for digital asset platforms.
[Add other contributors here] – [Date]
[Describe contribution in one sentence]

License – BalanceSeal

This repository is licensed under the GNU Affero General Public License v3.0 or later (AGPL-3.0+).

Key Points

You are free to use, modify, and distribute the code.
All redistributions, forks, and derivative works or network-deployed versions must also be licensed under AGPL-3.0+ and provide attribution to Roxanne Ardary and roxanneardary.com as required under Section 7 of the license.
The software is provided “as is,” without warranty of any kind.

For the full license text, see GNU AGPL-3.0 License.