bsv.cx

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Timestamp & verify evidence on-chain, free. Proofpack: a portable BEEF+BUMP proof bundle per txid.

Measured statistics

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "bsv.cx": {
      "url": "https://bsv.cx/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (9)

• notarize_hash

  Anchor a sha256 digest in a Bitcoin SV transaction, proving the content existed at this time. Send ONLY the hash — the content never leaves your machine, and bsv.cx cannot see what was hashed. Free. Idempotent: the same hash returns the same record.

  Parameters:

  • sha256 (required) — string — sha256 hex digest of the exact bytes you want to timestamp
  • label — string — optional public note stored with the proof

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• verify_hash

  Look up a sha256 across EVERY bsv.cx protocol — notary timestamps, verifiable-fetch receipts, notarized captures, web-page archives, Merkle batch roots and attestations — and return when it was anchored and the transaction that proves it. A hash anchored by any of these counts as found. Free, and never rate-limited into unavailability.

  Parameters:

  • sha256 (required) — string — the sha256 hex digest to look up

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• spv_verify

  Verify ANY Bitcoin (BSV) Merkle inclusion proof — a BEEF envelope (BRC-62), a BUMP (BRC-74), or a raw TSC proof — against block headers bsv.cx syncs itself over the BSV P2P network, NOT an explorer. Returns confirmed / rejected / inconclusive. This is the trustless core: you send only the proof (never the root), we fold the root ourselves and check it against a header we hold — so you never have to trust bsv.cx. Works for ANY txid's proof, not just bsv.cx's own anchors. Free.

  Parameters:

  • beef — string — a BEEF envelope (BRC-62) as hex — easiest input; carries the tx and its merkle path
  • bump — string — a BUMP (BRC-74) merkle path as hex; must be paired with txid
  • txid — string — 64-hex txid; required with bump, or with a raw TSC proof
  • index — integer — the transaction's index in the block (raw TSC proof only)
  • nodes — array — TSC merkle branch nodes as hex, or "*" for a duplicated node (raw TSC proof only)
  • height — integer — block height (raw TSC proof only)

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• proofpack

  For any CONFIRMED BSV transaction id, get a freshly SPV-verified bundle: BEEF (BRC-62) and BUMP (BRC-74) plus bsv.cx's own self-synced header-tip attestation. bsv.cx fetches the Merkle proof and folds it against block headers it syncs over the BSV P2P network BEFORE serving, so you receive a bundle that already confirms — verifiable by any @bsv/sdk client with no bsv.cx-specific code. Verification itself is free at /spv/verify; this does the fetch + fold + package for you and is priced per call (pay over HTTP with an x402 payment — see /pay).

  Parameters:

  • txid (required) — string — the confirmed transaction id to package a proof bundle for

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• archive_url

  Capture a web page as it looks right now — screenshot and text — and anchor a hash of that capture on-chain. Use this before relying on a page you cite, so a later edit or deletion cannot be denied. Free.

  Parameters:

  • url (required) — string — the page to capture
  • thorough — boolean — wait for lazy-loaded content; slower but better for long or image-heavy pages

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• get_archive

  Fetch the manifest for a previous archive_url capture: when it was taken, and its proof. Free.

  Parameters:

  • hash (required) — string — the capture hash returned by archive_url

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• verifiable_fetch

  Fetch a URL as readable text AND get a receipt anchoring a hash of the exact bytes returned, so you can later prove what the page said when you read it. Priced per call (pay over HTTP with an x402 payment — see /pay).

  Parameters:

  • url (required) — string — the page to fetch
  • thorough — boolean — wait for lazy-loaded content

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• batch_timestamp

  Anchor a Merkle root over many sha256 digests in a single transaction — far cheaper per item than notarizing each one. Each hash gets an inclusion proof. Priced per call (pay over HTTP with an x402 payment — see /pay).

  Parameters:

  • hashes (required) — array — sha256 hex digests to timestamp together

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• service_status

  Report whether anchoring is currently working. Call this if a tool reports something stored but not anchored.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

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