MCP Server

bsv.cx

            cx.bsv/bsv-cx
        

Crypto & Web3 Security Public & reachable MCP 2026-07-28

What this MCP does

Anchors hashes and web captures on Bitcoin SV, retrieves and verifies Merkle proofs, and produces portable evidence and timestamp proof bundles.

archive_url

Archive a web page with an on-chain timestamp

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.

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'format': 'uri', 'description': 'the page to capture'}, 'thorough': {'type': 'boolean', 'description': 'wait for lazy-loaded content; slower but better for long or image-heavy pages'}}}

batch_timestamp

Timestamp many hashes in one transaction

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).

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['hashes'], 'properties': {'hashes': {'type': 'array', 'items': {'type': 'string', 'pattern': '^[0-9a-fA-F]{64}$'}, 'maxItems': 5000, 'minItems': 1, 'description': 'sha256 hex digests to timestamp together'}}}

get_archive

Retrieve an archived page capture

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

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['hash'], 'properties': {'hash': {'type': 'string', 'pattern': '^[0-9a-fA-F]{64}$', 'description': 'the capture hash returned by archive_url'}}}

notarize_hash

Timestamp a hash on-chain

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.

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['sha256'], 'properties': {'label': {'type': 'string', 'maxLength': 200, 'description': 'optional public note stored with the proof'}, 'sha256': {'type': 'string', 'pattern': '^[0-9a-fA-F]{64}$', 'description': 'sha256 hex digest of the exact bytes you want to timestamp'}}}

proofpack

Get a portable, pre-verified proof bundle for a transaction

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).

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['txid'], 'properties': {'txid': {'type': 'string', 'pattern': '^[0-9a-fA-F]{64}$', 'description': 'the confirmed transaction id to package a proof bundle for'}}}

service_status

Check bsv.cx availability

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

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}

spv_verify

Verify any Bitcoin proof against bsv.cx's own headers

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.

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'beef': {'type': 'string', 'description': 'a BEEF envelope (BRC-62) as hex — easiest input; carries the tx and its merkle path'}, 'bump': {'type': 'string', 'description': 'a BUMP (BRC-74) merkle path as hex; must be paired with txid'}, 'txid': {'type': 'string', 'description': '64-hex txid; required with bump, or with a raw TSC proof'}, 'index': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0, 'description': "the transaction's index in the block (raw TSC proof only)"}, 'nodes': {'type': 'array', 'items': {'type': 'string'}, 'description': 'TSC merkle branch nodes as hex, or "*" for a duplicated node (raw TSC proof only)'}, 'height': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0, 'description': 'block height (raw TSC proof only)'}}}

verifiable_fetch

Fetch a page with a proof of what was returned

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).

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'format': 'uri', 'description': 'the page to fetch'}, 'thorough': {'type': 'boolean', 'description': 'wait for lazy-loaded content'}}}

verify_hash

Check an existing proof (any protocol)

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.

Input schema

{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['sha256'], 'properties': {'sha256': {'type': 'string', 'pattern': '^[0-9a-fA-F]{64}$', 'description': 'the sha256 hex digest to look up'}}}

Added

                            service_status
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            batch_timestamp
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            verifiable_fetch
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            get_archive
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            archive_url
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            proofpack
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            spv_verify
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            verify_hash
                        

Sept. 17, 2026, 12:38 p.m.

Added

                            notarize_hash
                        

Sept. 17, 2026, 12:38 p.m.

Server details

Version

0.1.1

Transport

Streamable HTTP

Tools

Latency

3367 ms

Last scan

Oct. 1, 2026, 2:43 a.m.

First seen

Sept. 13, 2026, 2:13 a.m.

Endpoint

https://bsv.cx/mcp

Recent scans

Success

Oct. 1, 2026, 2:43 a.m.

Success

Sept. 29, 2026, 2:50 a.m.

Success

Sept. 27, 2026, 2:42 a.m.

Success

Sept. 25, 2026, 2:50 a.m.

Success

Sept. 23, 2026, 2:41 a.m.

Success

Sept. 21, 2026, 2:49 a.m.

Success

Sept. 19, 2026, 2:40 a.m.

Success

Sept. 17, 2026, 12:38 p.m.

bsv.cx

What this MCP does

Tools

Recent tool changes

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