The public contract contains only verified, available routes.
Paid: 0.001 USDC on Base through x402. Supply an EVM address in the address query parameter. Returns native ETH and canonical Base USDC balances at one observed block, plus two-provider agreement metadata.
curl 'https://obol.danieldutoit.net/v1/base/address-snapshot?address=0x4094383033C1861E2686eaC4d4BBae6F0031F5d2'
Paid: 0.001 USDC on Base through x402. No query parameters are required. After payment, returns the Base network and chain identity plus one common block number, block hash, block time, and two-provider agreement metadata, reconciled against two pre-probed distinct-operator endpoints.
curl 'https://obol.danieldutoit.net/v1/base/network-status'
Paid: 0.001 USDC on Base through x402. Supply a supported EVM chain_id (default 8453) and an EVM address. After payment, the response is reconciled at a common block against two pre-probed distinct-operator endpoints. The runtime uses only the local probed registry and never fetches Chainlist or accepts an RPC URL.
curl 'https://obol.danieldutoit.net/v1/evm/address-snapshot?chain_id=10&address=0x4094383033C1861E2686eaC4d4BBae6F0031F5d2'
Paid: 0.001 USDC on Base through x402. Returns up to 100 newest historical Kraken OHLCV candles for an exact period in seconds, base, and quote. Results are newest first and informational only, not investment advice.
curl 'https://obol.danieldutoit.net/v1/markets/kraken/candles?period=60&base=BTC"e=USD&limit=10'
Paid: 0.001 USDC on Base through x402. Returns the Kraken top-of-book best bid, best ask, and spread percentage for one exact historical Unix-seconds timestamp, base, and quote. Informational only; not investment advice.
curl 'https://obol.danieldutoit.net/v1/markets/kraken/orderbook-top?timestamp=1788962867&base=BTC"e=USD'
Paid: 0.001 USDC on Base through x402. Multi-exchange candles return up to 100 newest historical OHLCV observations for an exact exchange, period, base, and quote. Results are newest first and informational only, not investment advice.
curl 'https://obol.danieldutoit.net/v1/markets/candles?exchange=KRAKEN&period=60&base=BTC"e=USD&limit=10'
Paid: 0.003 USDC on Base through x402. Returns one exact-address Bitcoin cluster assignment with derivation block and heuristic reason. A cluster is not proof of common ownership or identity.
curl 'https://obol.danieldutoit.net/v1/bitcoin/address-cluster?address=1dice8EMZmqKvrGE4Qc9bUFf9PX3xaYDp'
Paid: 0.003 USDC on Base through x402. Returns one exact-address Bitcoin Cash cluster assignment with derivation block and heuristic reason. A cluster is not proof of common ownership or identity.
curl 'https://obol.danieldutoit.net/v1/bitcoin-cash/address-cluster?address=1BpEi6DfDAUFd7GtittLSdBeYJvcoaVggu'
Paid: 0.003 USDC on Base through x402. Returns one exact-address Dogecoin cluster assignment with derivation block and heuristic reason. A cluster is not proof of common ownership or identity.
curl 'https://obol.danieldutoit.net/v1/dogecoin/address-cluster?address=D5EQRCnPMXmRvUoZwC7gu7fYspean3PQ9a'
Paid: 0.003 USDC on Base through x402. Returns one exact-address Litecoin Base58Check cluster assignment with derivation block and heuristic reason. A cluster is not proof of common ownership or identity.
curl 'https://obol.danieldutoit.net/v1/litecoin/address-cluster?address=La11a9B6w6dykTnst5MZAy78DfiAmUVL8G'
Paid: 0.003 USDC on Base through x402. Supply exactly 64 hexadecimal characters in the hash query parameter. Returns at most one Cardano mainnet transaction with bounded scalar transaction and block fields.
curl 'https://obol.danieldutoit.net/v1/cardano/transaction?hash=a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0'
Paid: 0.003 USDC on Base through x402. Supply a canonical base58 Solana signature decoding to exactly 64 bytes and its canonical nonnegative slot. Returns at most one exact match with bounded public-chain scalar fields; account keys are never returned.
curl 'https://obol.danieldutoit.net/v1/solana/transaction?signature=1111111111111111111111111111111111111111111111111111111111111111&slot=42'
Paid: 0.003 USDC on Base through x402. Supply an exact 64-character hexadecimal transaction_hash, canonical nonnegative block_number, and canonical nonnegative tx_index. Returns at most one bounded public-chain transaction; raw metadata is never returned.
curl 'https://obol.danieldutoit.net/v1/xrp/transaction?transaction_hash=a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0&block_number=103400001&tx_index=7'
Ethereum complex flow. Paid: 0.003 USDC on Base through x402. Supply exact 20-byte hexadecimal from_address, to_address, and asset values plus canonical block_number_min and block_number_max values spanning at most 100,000 blocks. Returns at most 100 newest normalized public-chain aggregate rows.
curl 'https://obol.danieldutoit.net/v1/ethereum/complex-flow?from_address=0x0000000000000000000000000000000000000000&to_address=0x0000000000000000000000000000000000000000&asset=0x0030b738bc1de21c93ca066340f74a952881e0a4&block_number_min=17783798&block_number_max=17883798'
Paid: 0.003 USDC on Base through x402. Supply an exact Arbitrum token contract in asset and a canonical block range no wider than 100,000. The Arbitrum token transfers product returns up to 100 newest transfers.
curl 'https://obol.danieldutoit.net/v1/arbitrum/token-transfers?asset=0x0030b738bc1de21c93ca066340f74a952881e0a4&block_number_min=17783798&block_number_max=17883798'
Hit-conditional: exact misses are free and return matched:false with charged:false. A known Ethereum, Bitcoin, or Tron label receives an x402 challenge for 0.001 USDC; the paid response returns the retained bounded label result.
curl 'https://obol.danieldutoit.net/v1/address-labels?chain=ethereum&address=0x1111111111111111111111111111111111111111'
Paid: 0.005 USDC on Base through x402. Checks one exact blockchain address against public-source EU, OFAC, and UK wallet observations. Returns match status, chain/token, source reference, observation dates, coverage limits, and no entity names. This is an informational screening aid, not legal advice.
curl 'https://obol.danieldutoit.net/v1/sanctions/address-screening?address=0x002471b8A185f9980708d0eAEC5B289714F56f8d'
An unpaid paid-resource request returns HTTP 402 with the x402 v2 requirements in the PAYMENT-REQUIRED header.
Free service status.
Cardano stake rewards are public chain data. Paid: 0.003 USDC on Base through x402. Supply an exact checksummed Cardano mainnet stake_address, one reward_type, and canonical earned_epoch_min and earned_epoch_max bounds spanning at most 1,000 epochs. Returns up to 100 newest rows containing only type, amount_lovelace, spendable_epoch, pool_id, and earned_epoch.
curl 'https://obol.danieldutoit.net/v1/cardano/stake-rewards?stake_address=stake1uyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqg6jacpu&reward_type=member&earned_epoch_min=1000&earned_epoch_max=2000'
Multi-exchange top-of-book exact snapshot. Paid: 0.001 USDC on Base through x402. Supply exactly exchange, timestamp, base, and quote. Supported exchanges: BINANCEUS, COINBASE, CRYPTOCOM, GEMINI, KRAKEN, and OKX. Returns one normalized best bid, best ask, and spread percentage snapshot or an exact miss. Informational only; not investment advice.
curl 'https://obol.danieldutoit.net/v1/markets/orderbook-top?exchange=COINBASE×tamp=1788962867&base=BTC"e=USD'