Blockchain And Crypto x402 offerings

Regime Persistence — historical context for current perp regime duration. Returns current regime, duration_hours, historical_percentile, typical_remaining_hours based on this regime's completed runs in the last 30 days (historical_runs counts those runs only). BTC/ETH/SOL via ?currency= param. Layer 3 Oracle Intelligence. — Ed25519 signed attestation

Arbitrum L2 gas price — current transaction fee for Arbitrum One network — Ed25519 signed attestation

Solana spot-futures basis and annualized carry — cross-venue arbitrage signal for basis traders — Ed25519 signed attestation

Real-time Bitcoin price in USD, a median across 10 exchanges including Binance, Coinbase, Kraken and Bullish — Ed25519 signed attestation

SOL market state synopsis — market stress and contagion context, plus SOL funding with z-score, OI change, liquidation flow, basis carry, perp regime and the run it sits in, order book, futures curve. Every input's as-of is signed. No macro risk score. No MSVI, MSXI, IV or RV. MSVI reads Deribit, which lists no SOL options. 60s cache. Ed25519 signed. — Ed25519 signed attestation

BTC liquidation flow — 1h/4h/24h windows, long/short breakdown, dominant side, largest event. From live event logger. Ed25519 signed. — Ed25519 signed attestation

GBP/USD forex exchange rate — British pound to US dollar cable rate — Ed25519 signed attestation

ETH spot price history — signed OHLCV, 1m/5m/1h/4h/1d intervals, up to 60 days. — Ed25519 signed attestation

BTC options Greeks — cross-exchange consensus delta/gamma/theta/vega from 2130+ options across Deribit, OKX, Bybit — Ed25519 signed attestation

SOL/USD RSI(14) and MACD(12/26/9) on daily and weekly Kraken closes. Wilder's smoothing, stated in the payload. Headline values use COMPLETED bars only; a separate forming block includes the bar being built and is signed with its own timestamp. Ed25519 signed. Descriptive — no forward-looking claim, and untested against a control. — Ed25519 signed attestation

MSTI contagion index history — 56 days of crypto-TradFi contagion data with per-row Ed25519 signatures — Ed25519 signed attestation

Real-time Ethereum price in JPY, multi-exchange aggregated oracle for Japanese markets — Ed25519 signed attestation

SOL perp trading regime — 10-signal classification with bias, confidence, risk. 30s cache. Ed25519 signed. — Ed25519 signed attestation

ETH liquidation flow — 1h/4h/24h windows, long/short breakdown, dominant side, largest event. — Ed25519 signed attestation

MSSI stress index history — 56 days, per-row original signatures. Vol, stablecoin, funding, dispersion components. — Ed25519 signed attestation

Real-time Cardano ADA price in USD, aggregated from multiple exchanges — Ed25519 signed attestation

USDT/EUR derived rate for stablecoin exposure in European markets — Ed25519 signed attestation

ETH implied volatility surface — ATM IV, skew, term structure from 690+ Deribit options — Ed25519 signed attestation

Best USDT supply yield across all protocols and chains — Ed25519 signed attestation

Real-time Solana price in JPY, aggregated from multiple exchanges — Ed25519 signed attestation

BTC SVI surface — Gatheral 2004 arbitrage-free IV parameterization with smooth smile interpolation — Ed25519 signed attestation

DeFi protocol metrics — TVL, avg supply APR, utilization for Aave, Compound, Morpho, Spark, Sky and more. DeFiLlama + on-chain. Ed25519 signed. — Ed25519 signed attestation

BTC spot price history — signed OHLCV, 1m/5m/1h/4h/1d intervals, up to 60 days. Batch Ed25519 signed. — Ed25519 signed attestation

Ethereum open interest across 5 exchanges — aggregated OI with 1h/4h/24h deltas for positioning analysis — Ed25519 signed attestation