Implementation and Integration Patterns
Documents practical patterns for asset issuance with authorization flags and clawback controls, trustline management, and regulated stablecoin deployments on Stellar. Covers integration architectures for anchors, bridges, and cross-border payment corridors. Developers and payment operators use this group to implement compliant, secure integrations that align with Stellar's asset control primitives.
Regulated Asset Issuance Blueprint
A technical architecture guide for issuing a compliant stablecoin or tokenized real-world asset on Stellar. Covers the full lifecycle: account setup, mastering authorization flags (AUTH_REQUIRED, AUTH_REVOCABLE), and implementing clawback mechanics. Affected actors include asset issuers, compliance teams, and custodians. Chainscore can provide an issuance architecture review and flag configuration audit to prevent misconfiguration and unauthorized transfers.
Trustline Management Automation
Practical patterns for programmatically managing trustlines at scale for wallets, custodians, and anchors. Covers handling AUTH_REQUIRED flag checks, automating approval/revocation workflows for KYC/AML compliance, and monitoring trustline state changes via Horizon and Soroban RPC. Chainscore can review automation logic and monitoring systems to ensure compliance workflows are robust and race-condition free.
Clawback and Authorization Enforcement Patterns
An operational deep dive into enforcing asset controls on Stellar. Compares on-ledger clawback vs. off-ledger freeze-and-reverse patterns, building a transaction pre-screening service using AllowTrust and Clawback operations, and handling edge cases for non-compliant accounts. Affects payment operators and compliance engineers. Chainscore can assess enforcement logic for edge cases and integration risks with existing off-chain systems.
SEP-8 Regulated Assets Integration
A developer-focused guide on implementing the SEP-8 standard for third-party regulated assets. Covers server-side logic for approving/rejecting payments based on off-chain compliance checks and the client-side flow for handling the action_required response. Affects wallet and exchange developers integrating regulated tokens. Chainscore can perform an integration review to ensure correct handling of SEP-8 compliance callbacks and error states.
Full-Stack Anchor Architecture
A reference architecture for building a Stellar anchor, the critical bridge between fiat/crypto and the network. Covers integration of SEP-6, SEP-24, and SEP-31 for deposit/withdrawal flows, KYC orchestration, and the internal ledger reconciliation model to prevent double-spend or loss. Affects payment operators and fintechs. Chainscore can provide an architecture review focusing on reconciliation integrity and failure mode recovery.
Cross-Border Payment Corridor Design
A blueprint for payment operators building remittance or B2B corridors on Stellar. Focuses on chaining SEP-31 sending and receiving anchors, managing FX quotes, handling payment status callbacks, and architecting for idempotency and settlement finality. Affects remittance companies and PSPs. Chainscore can review corridor designs for idempotency guarantees and settlement risk under anchor failure scenarios.
Bridge Security and Custody Operations
A security-focused guide for managing the hot, warm, and cold wallet infrastructure of a Stellar bridge or anchor. Covers key management, multi-sig account configuration for operational security, transaction signing policies, and monitoring for anomalous withdrawal patterns. Affects infrastructure and security teams. Chainscore can conduct a custody architecture and signing policy review to identify key compromise and insider threat vectors.
SEP-24 vs. SEP-6 Interactive Flow Integration
A comparative integration guide for choosing and implementing the right deposit/withdrawal standard. Details client-side UX for hosting interactive KYC/AML flows (SEP-24) versus the programmatic API-driven approach (SEP-6), including error handling and session management. Affects frontend and backend integration teams. Chainscore can review the integration path for session security and compliance with user data handling requirements.
Soroban Token Interface (SEP-41) Integration
A practical guide for wallets, explorers, and dApps to integrate with Soroban's standard token contract. Covers parsing the contract spec, correctly calling balance, transfer, and approve functions, and handling the StellarAssetContract for wrapped classic assets. Affects wallet and dApp developers. Chainscore can audit integration code for correct interface implementation and state handling.
Classic Asset to Soroban Token Migration Patterns
A technical walkthrough for issuers migrating a Stellar classic asset to a Soroban smart contract token. Covers the irreversible asset clawback migration path, the new authorization model using AssetInterface, and how to update SEP-24/SEP-6 anchors to support the new contract. Affects asset issuers and anchor operators. Chainscore can provide a migration readiness review and assess the impact on downstream integrations.
Building a Payment-Hub with Soroban
An architectural pattern for using Soroban smart contracts as a decentralized payment-hub. Covers a contract that atomically executes multi-hop path payments, manages off-chain fee collection, and enforces compliance rules on-chain. Affects payment processors and DeFi protocol architects. Chainscore can review the smart contract logic for atomicity, fee calculation accuracy, and compliance rule enforcement.
Stellar Transaction Submission and Error Handling
A definitive guide for exchanges and custodians on robust transaction submission. Covers Horizon and Soroban RPC submission, interpreting transaction_result_codes, handling tx_bad_seq, tx_insufficient_fee, and tx_too_late errors, and implementing a reliable fee-bumping strategy. Affects exchange and custodian engineering teams. Chainscore can audit the transaction submission and error recovery module to prevent stuck payments and nonce gaps.
Multi-Signature and Co-Signing Service Integration
A pattern for integrating Stellar's first-class multi-sig into a custodial or institutional workflow. Covers constructing transactions with multiple sourceAccount signatures, integrating with external HSMs or co-signing services, and managing signature collection timeouts. Affects institutional custodians and treasury teams. Chainscore can review the multi-sig orchestration and HSM integration for security and operational liveness risks.
SEP-10 Web Authentication for Wallet Connect
A guide for dApps and services on using SEP-10 to authenticate a Stellar account holder. Covers the challenge-response flow, managing JWT tokens for session management, and using the authenticated session to securely call other SEP endpoints. Affects dApp and service developers. Chainscore can review the SEP-10 implementation for replay protection, token validation, and secure session management.
Muxed Account (M-Address) Integration
A practical guide for exchanges and custodians on supporting multiplexed accounts. Covers parsing and generating M-addresses, using the Memo ID at the protocol level to map a single pooled Stellar account to thousands of users, and handling the associated accounting complexity. Affects exchange and custodian engineers. Chainscore can review the M-address integration for correct memo handling and reconciliation logic to prevent fund misattribution.
Data Pipeline for Stellar Ledger Analytics
An architectural guide for data teams building a real-time analytics pipeline. Covers ingesting ledger close meta from Horizon or a captive core instance, parsing operations and effects into a relational model, and detecting business events like large stablecoin mints or clawbacks. Affects data and risk teams. Chainscore can review the data pipeline design for completeness and accuracy in detecting critical operational and compliance events.
Operational Monitoring for Payment Operators
A runbook for monitoring the health of a Stellar-based payment service. Covers key metrics to track (Horizon latency, transaction failure rate, anchor callback health, hot wallet balance), setting up alerts for SEP-24/SEP-31 transaction timeouts, and monitoring for chain halts. Affects SRE and operations teams. Chainscore can assess the monitoring setup for coverage gaps and help define alerting thresholds for critical payment workflows.