Verify it yourself

The principle

Haven makes no claim that requires trusting Haven to verify. Every network the protocol uses exposes a public, CORS-open RPC endpoint that any reader can query directly from a browser or terminal. The examples below are copy-pasteable.

EVM chain liveness

Verify that the gating chains are reachable and returning current block numbers:

# Ethereum mainnet
curl -s -X POST https://ethereum-rpc.publicnode.com \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

# Base
curl -s -X POST https://mainnet.base.org \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

# OP Mainnet
curl -s -X POST https://optimism.publicnode.com \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Expected response shape:

{"jsonrpc":"2.0","id":1,"result":"0x1a2b3c4"}

Filecoin RPC

Verify that the storage layer is answering on both mainnet and calibration:

# Filecoin mainnet
curl -s -X POST https://api.node.glif.io/rpc/v1 \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"Filecoin.ChainHead","params":[],"id":1}'

# Filecoin Calibration (testnet — where pin contracts are deployed)
curl -s -X POST https://api.calibration.node.glif.io/rpc/v1 \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"Filecoin.ChainHead","params":[],"id":1}'

Expected response includes Height and Cids array representing the current tipset.

ICP gateway status

Verify that the Internet Computer gateway is operational:

curl -s https://icp0.io/api/v2/status

Expected response is a CBOR-encoded status object. A 200 response confirms the gateway is reachable and the subnet hosting canister dciac-uaaaa-aaaad-qlzuq-cai is accessible.

Reading a gate token’s identity (eth_call)

Verify that a gating contract answers name() without any API key. This example reads the name of the Nouns contract on Ethereum:

curl -s -X POST https://ethereum-rpc.publicnode.com \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc":"2.0",
    "method":"eth_call",
    "params":[{
      "to":"0x9C8fF314C9Bc7F6e59A9d9225Fb22946427eDC03",
      "data":"0x06fdde03"
    },"latest"],
    "id":1
  }'

Selector 0x06fdde03 is name(). The response result is an ABI-encoded string. Decode it to confirm the contract identifies itself.

To read totalSupply() (selector 0x18160ddd) or balanceOf(address) (selector 0x70a08231), substitute the data field. For balanceOf, append the address zero-padded to 32 bytes:

# balanceOf on Base USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)
curl -s -X POST https://mainnet.base.org \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc":"2.0",
    "method":"eth_call",
    "params":[{
      "to":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "data":"0x70a08231000000000000000000000000YOUR_ADDRESS_HERE"
    },"latest"],
    "id":1
  }'

Arkiv (no public network)

The entity index endpoint is included for completeness. Braga was retired on 12 August 2026 and the next public testnet is expected September 2026, so this does not currently answer.

The command is generated from the configured host rather than written out, so it stays correct when the network is repointed — see PUBLIC_ARKIV_HOST in the README.

curl -s -X POST https://braga.hoodi.arkiv.network/rpc \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"arkiv_getEntityCount","params":[],"id":1}'

Expected today: HTTP 503. Once a public network answers, this returns the total entity count in the state trie.

Every previous devnet has served RPC at /rpc, the faucet at /faucet/ and the explorer at / from one host, so the next network is expected to follow the same convention under a new name.

Filecoin storage contracts

Verify the FilecoinPay contract on calibration is deployed and answering:

curl -s -X POST https://api.calibration.node.glif.io/rpc/v1 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc":"2.0",
    "method":"eth_call",
    "params":[{
      "to":"0x09a0fDc2723fAd1A7b8e3e00eE5DF73841df55a0",
      "data":"0x06fdde03"
    },"latest"],
    "id":1
  }'

This queries the name() of the FilecoinPay contract on calibration chain (id 314159). A non-empty response confirms the contract is deployed and the RPC is answering.

What a 503 means

When an endpoint returns 503 — as Arkiv does today — it means the network component is not serving. The protocol is designed so that each network’s failure is contained: Arkiv offline means metadata is unresolvable, but gating, storage, and payment continue independently. The interface draws this honestly: unlit edges where a live query would go, rather than invented data.