@myrxwallet/sdk

Official SDK for Chain 8472 (MyRx Chain) — the EVM-compatible blockchain securing patient health data under the 21st Century Cures Act.

Installation

npm install @myrxwallet/sdk
# Optional: ERC-20 + bridge operations require ethers v6
npm install ethers

Chain 8472 Quick Connect

const { Chain8472Provider, CHAIN_8472 } = require('@myrxwallet/sdk');

const provider = new Chain8472Provider();
const block = await provider.getBlockNumber();
const balanceMRT = await provider.getBalanceMRT('0xYourAddress');

console.log(`Chain ${CHAIN_8472.chainId} — block ${block}`);
console.log(`MRT balance: ${balanceMRT}`);

RPC: https://rpc.myrxwallet.io
Chain ID: 8472
Explorer: https://explorer.myrxwallet.io
Native Token: MRT (MyRxWallet Reward Token, 18 decimals)

Add to MetaMask / any EVM wallet:

{
  "chainId": "0x2118",
  "chainName": "MyRx Chain",
  "rpcUrls": ["https://rpc.myrxwallet.io"],
  "nativeCurrency": { "name": "MyRx Token", "symbol": "MRT", "decimals": 18 },
  "blockExplorerUrls": ["https://explorer.myrxwallet.io"]
}

MRT Token

const { MRTToken, CONTRACTS_8472 } = require('@myrxwallet/sdk');

const mrt = new MRTToken();

// Get token metadata
const meta = await mrt.metadata();
// { name: 'Wrapped MRT', symbol: 'wMRT', decimals: 18, totalSupply: '...' }

// Check balance
const balance = await mrt.balanceOf('0xYourAddress');

// Transfer MRT
const receipt = await mrt.transfer(privateKey, recipientAddress, '10.0');

// Approve bridge
await mrt.approve(privateKey, BRIDGE_CONTRACT_ADDRESS, '100.0');

Wrapped MRT: 0x00e69754c21090d69D29a2abe3B6CF153D3F1dF7
Regulatory note: MRT rewards are infrastructure compensation — not investment yield. Full regulatory analysis →

Multi-chain Bridge

MRT is live across 5 EVM networks via MRTBridgeMint contracts.

const { MRTBridge } = require('@myrxwallet/sdk');

// List supported chains
const chains = MRTBridge.supportedChains();
// [{ chainId: 8453, name: 'Base', role: 'Primary bridge hub' }, ...]

// Bridge MRT from Base → Chain 8472
const bridge = new MRTBridge(BRIDGE_CONTRACT_ON_BASE, BASE_RPC_URL);
const fee = await bridge.getBridgeFee(8472, '100');
const result = await bridge.bridgeTo(privateKey, 8472, recipientAddress, '100');

| Chain | Role | |-------|------| | Base (8453) | Primary bridge hub — Across Protocol | | Arbitrum (42161) | L2 settlement layer | | Polygon (137) | High-throughput transactions | | Ethereum (1) | Institutional settlement | | BNB Chain (56) | Global accessibility |

Healthcare API (FHIR R4)

const { MyRxHealthClient } = require('@myrxwallet/sdk');

// Authenticate via SMART on FHIR (PKCE)
const authUrl = MyRxHealthClient.buildAuthUrl({
  clientId: 'your-client-id',
  redirectUri: 'https://your-app.com/callback',
  codeChallenge: codeChallenge,
  scope: 'patient/*.read openid fhirUser',
});

// After redirect, exchange code for token
const token = await MyRxHealthClient.exchangeCode({
  code: authorizationCode,
  clientId: 'your-client-id',
  redirectUri: 'https://your-app.com/callback',
  codeVerifier: codeVerifier,
});

// Access patient data
const client = new MyRxHealthClient(token.access_token);
const patient   = await client.getPatient(patientId);
const meds      = await client.getMedications(patientId);
const vitals    = await client.getObservations(patientId, 'vital-signs');
const nfts      = await client.getNFTs(patientId);
const score     = await client.getMyRxScore(patientId);

FHIR Endpoint: https://ehr.myrxwallet.io/api/v1/fhir/r4/metadata
Standards: HL7 FHIR R4 · US Core 6.1.0 · SMART App Launch 2.0.0 · Bulk Data 2.0.0
Inferno Result: 317/317 PASS (ONC (g)(10) certification baseline)

Validators

Chain 8472 validator network secures federally-mandated patient health infrastructure.

• Phase 1 (2026): 10–50 validators — founding team + DAO members + credentialed developers
• NFT-gated credentialing: Validator rights tied to NFT tier (Founding/Provider/Community/Developer)
• DAO governance: DAORX.IO — protocol parameters, emission schedules, validator standards

// Get validator network status via raw RPC
const provider = new Chain8472Provider();
await provider.verify(); // confirms you're on Chain 8472

// Full regulatory framework:
// https://myrxwallet.io/docs/staking-validators-whitepaper.html

Developer Portal

Register for API keys and sandbox access:

• Developer Portal: https://myrxwallet.io/developer.html
• Sandbox: Instant keys prefixed mrx_sb_
• Production: Manual review, prefixed mrx_lv_
• SMART App Registration: POST /api/v1/developer/register

Compliance

| Standard | Status | |----------|--------| | FHIR R4 / US Core 6.1.0 | ✅ Inferno 317/317 PASS | | SMART on FHIR 2.0.0 + PKCE | ✅ Live | | HIPAA Security Rule (45 CFR §164.312) | ✅ AES-256-GCM | | 21st Century Cures Act / ONC Interoperability Rule | ✅ Core requirement | | DEA EPCS (21 CFR Part 1311) | ✅ TOTP 2FA + audit log | | SEC Howey Test (MRT) | ✅ Prongs 3 & 4 not satisfied |

License

Apache 2.0 — MyRxWallet North America Corporation
CAGE: 9VNZ7 · UEI: RKYFJECN9GL3

myrxwallet.io · compliance · developer docs