Crypto & Blockchain

Coins trending in search/interest right now (CoinGecko) — attention signal. Live. Returns JSON.

Daily Coinbase premium history: the Coinbase versus offshore price spread per day, the classic read on United States spot demand, with both leg prices. The live reading is free at /api/public/premium.

CRYPTO: where a coin trades — top exchange markets by 24h volume with price and trust score (CoinPaprika). ?id=btc-bitcoin. Returns JSON.

Total value locked per blockchain, ranked — capital-flow signal across chains. Live. Returns JSON.

Live bikes available and open docks at every nextbike station in Leipzig, Germany, updated in real time; no params. Returns JSON.

CRYPTO: Bitcoin Lightning Network state — node/channel counts, capacity, Tor vs clearnet, fee rates (mempool.space). Returns JSON.

Crypto sectors/categories ranked by 24h market-cap change — rotation signal (AI, memes, RWA, DePIN). Live. Returns JSON.

CRYPTO: fee/revenue detail for one DeFi protocol over 24h/7d/30d/1y/all-time with chains (DeFiLlama). ?protocol=aave|uniswap|gmx. Returns JSON.

ON-CHAIN READ: read ERC-20 totalSupply / balanceOf (?chain=base&token=&holder=&decimals=) via RPC — a deterministic oracle. Returns JSON.

Latest fossil fuel energy as a share of total energy consumption across every country. Returns JSON.

MARKETS: live regular-market quote with OHLC and 52-week range for a symbol (?symbol=AAPL). Returns JSON.

CRYPTO: live Bitcoin network hashrate (EH/s), current difficulty and 3-day trend (mempool.space). Returns JSON.

MARKETS: foreign-exchange rates for a base currency on a specific past date (?date=2020-01-02&base=USD&symbols=EUR,GBP). ECB-sourced via Frankfurter. Returns JSON.

CRYPTO: on-chain options protocols ranked by 24h/7d/30d notional volume (DeFiLlama). Returns JSON.

MARKETS: daily ECB euro reference exchange-rate series for a currency vs EUR (?currency=USD&n=15). Returns JSON.

Live gas price (gwei) on Ethereum and Base — transaction-cost signal for onchain agents. Live. Returns JSON.

MARKETS: tickers trending in interest/searches right now for a region (?region=US). Returns JSON.

Live consolidated prediction-market feed: top active markets across Polymarket AND Kalshi in one call, normalized to {question, yesProb, volume, closeDate}. Cross-venue in a single request — cheaper than querying each. Returns JSON.

Fastest-rising new GitHub repos by stars — dev/tech trend signal. Live. Returns JSON.

CRYPTO: 30-day daily TVL history for one chain (DeFiLlama). ?chain=Ethereum|Arbitrum|Solana. Returns JSON.

CRYPTO: fundamental profile — type, tags, proof mechanism, whitepaper, dev status, links (CoinPaprika). ?id=btc-bitcoin. Returns JSON.

CRYPTO: Bitcoin miner-reward economics over ~144 blocks — reward vs fees, fee share, per-block averages (mempool.space). Returns JSON.

USD Coin

Crypto Context Daily: Flat Tape, Cold Wallet Stress. BTC was up 0.4% at the Aug. 2 snapshot and global volume recovered from Saturday's trough, but weekly majors stayed red, tracked stablecoin float was still down $1.90 billion on the week, and the Coldcard incident started showing up in holder behavior. One payment returns the full text, and the creator is paid as it is used.