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proof-of-custody

MCP server · hosted · v1.1.0 · io.github.onrampbtc/proof-of-custody
Online · tested 2h agoNEW · 3h agoSeen in the registry 2h ago

Bitcoin custody scores, failure registry, ETF custody, stablecoin and x402 data, source router.

Website ↗Source code ↗How to connect ↓

What it does

proof-of-custody is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.

At a glance

Hosted (remote)YES
Local installNO
Version1.1.0
PriceNot in the registry
First seen20 Oct 2026
Last checked2h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 2h ago (live check)

Hosted endpoint

  • https://proofofcustody.io/api/mcp streamable-http

In Claude Code: claude mcp add --transport http proof-of-custody https://proofofcustody.io/api/mcp

MCP settings (Claude Desktop, Cursor and other MCP clients)

{
  "mcpServers": {
    "proof-of-custody": {
      "url": "https://proofofcustody.io/api/mcp"
    }
  }
}

Live check

Electra Index connected to the hosted endpoint 2h ago

ONLINE proof-of-custody answered an MCP connection on 20 Oct 2026 and introduced itself as proof-of-custody 1.1.0 (MCP protocol 2025-06-18).

15 tools offered to AI assistants

  • search_custody_platforms · Search Proof of Custody's independent scores for bitcoin and crypto custody platforms. Covers 90+ platforms across exchanges, qualified custodians, ETFs, IRAs, collaborative multisig and multi-institution custody, each scored 0-100 on a pub
  • get_custody_platform · Full Proof of Custody record for one platform: overall score, per-category scores, custody model, fees, insurance position, strengths and limitations. Use after search_custody_platforms, or when a specific provider is named.
  • compare_custody_platforms · Compare two or more custody platforms side by side on Proof of Custody's scores and custody architecture. Comparison is the shape most useful for a custody decision, because the differences that matter are structural rather than promotional
  • assess_custody_independence · Apply the Custody Independence Standard: a published four-pillar test of whether a custody arrangement has genuine independence or only nominal distribution. Pillars are vendor, entropy, control and operational independence. Use for 'how ma
  • list_custody_incidents · The Proof of Custody incident registry: dated records of major bitcoin custody failures from Mt. Gox to the 2026 Coldcard entropy defect, each with root cause, reported loss, the lesson, and which custody configurations the failure class co
  • get_coldcard_incident_status · Live status of the July 2026 Coldcard entropy failure: a firmware defect that caused affected hardware wallets to skip their hardware random number generator, making generated keys reconstructible offline. Returns the affected-model matrix
  • get_hardware_wallet_scores · Proof of Custody's hardware wallet rubric: six weighted dimensions — entropy and key generation 25%, firmware integrity 20%, supply chain 15%, disclosure conduct 15%, multisig and recovery portability 15%, privacy and data handling 10%. Ent
  • get_etf_custody_concentration · Filing-derived analysis of custodian concentration across US spot bitcoin ETFs: which custodian holds each fund's bitcoin, and the resulting Nakamoto coefficient at the custody layer. Use for questions about bitcoin ETF safety, IBIT or FBTC
  • find_source · Source router. Given a topic or question about bitcoin or digital-asset market structure (ETF holdings or custodians, stablecoin supply or attestations, tokenized assets, x402 and agent payments, agentic commerce protocols, MCP registries,
  • whats_new · What changed on Proof of Custody since a date: corrections, methodology changes, live incident updates and daily dataset refreshes (stablecoins, tokenized assets, x402, ETF net assets). Use for a scheduled briefing, or to check whether a ca
  • watch_counterparties · Watchtower for a holder's counterparties. Give it the names of the exchanges, custodians, ETFs, IRA providers or hardware wallets someone uses and it returns, for each, the published custody model and single point of failure, incidents in t
  • search_transcripts · Full-text search across 320+ Onramp Media podcast transcripts (The Last Trade, Final Settlement and others) for what a guest or host said about a topic. Returns episode, show, date, matching passages and the episode URL. Use for 'what did X
Show 3 more
  • get_stablecoin_supply · Daily snapshot of stablecoin supply: total USD-pegged circulating supply, USDT and USDC share, and the top 25 by supply, credited to DefiLlama with the as-of date. Use for 'how big is the stablecoin market', 'USDT vs USDC share', or a stabl
  • get_tokenized_assets · Daily snapshot of tokenized-asset (RWA) protocols by TVL, credited to DefiLlama, with a pointer to RWA.xyz for issued asset value by class (tokenized Treasuries, credit, commodities). Use for 'how big is tokenization', 'largest RWA protocol
  • get_x402_services · Daily snapshot of the x402 agent-payments ecosystem: how many x402-payable services the Coinbase Bazaar lists, by network, asset and scheme, plus the x402 Foundation's 30-day transaction, volume, buyer and seller counts. Use for 'what is x4

How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Facts & evidence

Each fact shows where it was seen and when.
FactValueEvidenceSourceLast confirmed
Hosted endpointhttps://proofofcustody.io/api/mcpDECLAREDSRC-001 Official MCP Registry2h ago
Local install (package)noDECLAREDSRC-001 Official MCP Registry2h ago
Remote access (hosted)yesDECLAREDSRC-001 Official MCP Registry2h ago
Websitehttps://proofofcustody.io/aiDECLAREDSRC-001 Official MCP Registry2h ago
Repositoryhttps://github.com/onrampbtc/bitcoin-custody-datasetDECLAREDSRC-001 Official MCP Registry2h ago
Registry statusactiveDECLAREDSRC-001 Official MCP Registry2h ago
Version1.1.0DECLAREDSRC-001 Official MCP Registry2h ago
MCP serveryesDECLAREDSRC-001 Official MCP Registry2h ago

Change history

  • NEW20 Oct 2026
    first seen in the index

Is this page accurate?

Flag it and our robot re-checks the official source. Reports never change a score.

Questions about proof-of-custody

How do I connect proof-of-custody?

Use the hosted endpoint https://proofofcustody.io/api/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does proof-of-custody offer?

When Electra Index connected on 20 Oct 2026, it listed 15 tools: search_custody_platforms, get_custody_platform, compare_custody_platforms, assess_custody_independence, list_custody_incidents, get_coldcard_incident_status, get_hardware_wallet_scores, get_etf_custody_concentration and more. The full list is in "Live check" above.

Is proof-of-custody online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 2h ago.