Ask what a custodian's single point of failure is, what has gone wrong in custody before, who holds the bitcoin behind an ETF, how big stablecoins and tokenized assets are today, and where the primary source for each of those lives. Every answer links its source and states its as-of date.
Free, read-only, no key. Every answer carries its source URL, as-of date and the publisher disclosure.
Add the Proof of Custody MCP server at https://proofofcustody.io/api/mcp. On the first Monday of each month, brief me on what changed in bitcoin custody: new or updated custody incidents, corrections and methodology changes, and any score that moved more than 5 points, with links. Each week, tell me if a new custody incident or hardware wallet advisory was published.
https://proofofcustody.io/api/mcpScores move monthly and incidents arrive without warning, so the useful cadence is a monthly briefing plus a weekly incident check. Give an agent with scheduling (Claude scheduled tasks, Hermes, OpenClaw) this prompt and it will call the server without being asked again:
Add the Proof of Custody MCP server at https://proofofcustody.io/api/mcp. On the first Monday of each month, brief me on what changed in bitcoin custody: new or updated custody incidents, corrections and methodology changes, and any score that moved more than 5 points, with links. Each week, tell me if a new custody incident or hardware wallet advisory was published.
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 published six-category weighted methodology.get_custody_platform: Full Proof of Custody record for one platform: overall score, per-category scores, custody model, fees, insurance position, strengths and limitations.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.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 could reach. Self-custody failures are included on equal terms with custodial ones.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 with fixed firmware versions, confirmed and suspected loss figures, and open questions.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%. Entropy is weighted highest because a key generated from predictable randomness cannot be protected by anything downstream.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.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, proof of reserves, regulators and licences, hardware wallet advisories, custody incidents), returns the primary or near-primary sources to read, with cadence, access terms and whether the URL answered today.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).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 the registry, hardware rubric status where it is a device, and any correction or score change since a date.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.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.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).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.No accounts and no keys, so there is nothing to tie a call to a person. The server logs one line per call: the tool name, the calling client's name and version as it announces itself, and the user agent. It does not log tool arguments, so the names you pass to watch_counterpartiesare never stored. Counts are used to see which agents call which tools. Nothing from these logs reaches Onramp Bitcoin's sales or marketing, and nothing is sold or shared.
Everything the server returns is published on this site under CC BY 4.0: use it, including commercially and to ground a model, with attribution and a link. The server is read-only; it cannot move funds, open accounts or change anything. Scores are editorial assessments of public information, not investment advice, and the snapshots credited to other publishers (DefiLlama, the Coinbase x402 Bazaar, issuer pages) are theirs; cite them for the figures. Proof of Custody is published by Onramp Bitcoin, which is scored by the same methodology as every other platform; every response carries that disclosure. Coverage is selected, not exhaustive.
Tool schemas are stable within a major version; additions are announced in the changelog and the change feed. Report a problem or request a field on the dataset repository. Plain-text version of this page: /ai.md. Datasets: /datasets.