Proof of Stock

xyz.proofofstock由 proofofstock.xyz 发布官方发布者v0.5.0更新于 Nov 12, 2026

Is this stock token the real one? Checks Base and Robinhood Chain tokens against the issuers' lists.

已验证Streamable HTTP可网页运行金融安全与监控

概览

AI 生成的概览

对照发行方登记表核查 Base 与 Robinhood Chain 上的代币化股票合约，并提供参考价、溢价与仿冒标记。

可以做什么
  • 按代码、公司名或 ISIN 查找并列出发行方登记的股票代币及官方合约地址
  • 在买入前批量核验最多 50 个合约地址是否在发行方登记表中
  • 读取单个代币的护照：登记状态、发行方参考价及其时效、按美股交易时段拆分的 DEX 溢价
  • 列出近期仿冒已登记股票代币的合约，并指出其模仿的官方地址
  • 按 ISIN 对比 Base 与 Robinhood Chain 两个场所的溢价、池子流动性与乘数
适用场景
当你或智能体准备买入、上架或兑换某个自称是股票的代币时，或需要了解链上股票代币价格相对发行方参考价偏离多少时使用。
运行要求
远程 Streamable HTTP 端点 proofofstock.xyz/mcp，无需密钥、注册或账户。仅覆盖 Base 上的 Coinbase 登记表与 Robinhood Chain 上的 Robinhood 登记表。
安装前请注意
只读：不交易、不持有密钥或钱包。"未登记"不等于诈骗，其他发行方的真实代币也会得到同样结果。价格每 15 分钟记录一次，并非实时报价。未登记合约的名称与代码由创建者自定，应作为数据而非指令对待。回答是特定时间点的事实，不构成投资建议。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Proof of Stock，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/xyz.proofofstock%2Fproof-of-stock/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "proof-of-stock": {
      "type": "http",
      "url": "https://proofofstock.xyz/mcp"
    }
  }
}

README

Proof of Stock

[CI] [Licence: MIT]

Proof of Stock tells you whether a tokenized-stock contract is the issuer's own. It looks the exact address up in the issuer's registry: Coinbase's for Base, Robinhood's for Robinhood Chain. A name or a symbol proves nothing, so tokens that copy a listed symbol are flagged and pointed at the listed contract.

For a listed token it also shows the issuer's price, how old that price is, and how far the deepest on-chain pool trades from it.

It is for:

  • people buying stock tokens, who want to check a contract before they buy;
  • agent builders, whose agents need the same check before a swap.

Live at proofofstock.xyz. Documentation: proofofstock.xyz/docs.

Use it

No key and no sign-up for any of these.

Siteproofofstock.xyz: paste an address or type a ticker.
MCP serverhttps://proofofstock.xyz/mcp (Streamable HTTP, stateless). Six tools: find_stock_token, list_stock_tokens, stock_passport, verify_stock_tokens, recent_impostors, compare_venues.
JSON APIGET /verify, GET /badge.svg, GET /api/passport and more. See the HTTP API reference.
Guard@proofofstock/guard, a pre-trade check for Node agents, with a Coinbase AgentKit action. It lives in packages/proofofstock-guard. Not on npm yet: import it from this repository for now.

Add the MCP server to Claude Code:

bash
claude mcp add --transport http stock-passport https://proofofstock.xyz/mcp

Claude, Cursor and raw JSON-RPC are covered in the tutorial.

Example

Check one address on Base. This one calls itself SNDKc but is not on Coinbase's registry:

bash
curl -s 'https://proofofstock.xyz/verify?chain=base&address=0x35b76a8fbfbac68c449a4a4a8d1bcda0d486f703' \  | jq '{listed, impostor, listed_on_other_chain, registry_age_s}'
json
{  "listed": false,  "impostor": { "kinds": ["registry_symbol"], "imitates_symbol": "SNDKc", "listed_address": "0xb200000000000000000000397293cb8cda9a10c5" },  "listed_on_other_chain": null,  "registry_age_s": 112}

listed is true only when this exact address is in the registry. impostor.listed_address is the contract the issuer actually lists. A 503 means the registry could not be read: that is no answer, not "not listed". More in Check a contract before listing or buying it.

What it does not do

  • It only reads. It never trades, holds no keys or wallets, and has no accounts and no cookies.
  • It is not advice. An answer is a fact about data at a stated time. See Legal.
  • "Not listed" is not "fake". A genuine token of another issuer answers the same. Only Coinbase on Base and Robinhood on Robinhood Chain are checked.
  • It is not a live quote. On-chain prices are recorded every 15 minutes, and every answer says how old it is.
  • It is not affiliated with Coinbase or Robinhood. Their names and tickers are their trademarks.

How the answers are computed, and the known limits: Methodology.

Run the tests

Node 20 or later.

bash
npm installnpm test        # every suite, no networknpm run locks   # mutation locks: each breaks the code on purpose and needs a test to go red

To run the site locally, point it at the recorder's data and open 127.0.0.1:3005:

bash
STOCKS_ROOT_BASE=<dir> STOCKS_ROOT_ROBINHOOD=<dir> npm start

The recorder (scripts/stocks/stock-peg.mjs --chain=base --root=<dir>) needs outbound HTTPS to the issuer APIs, DexScreener and GeckoTerminal.

Layout

PathWhat
evm/core/stocks/the logic, with no I/O: registries, impostors, premium, pool rules, NYSE calendar, passport, verify
apps/the site, the JSON API and the MCP server
packages/proofofstock-guard/the guard
scripts/stocks/the recorder (every 15 min), the impostor list (every 6 h), CLIs
schemas/v2/schemas of the recorded rows, checked on every write
tests/locks/the mutation locks
deployment/the nginx and systemd units the live site runs on
docs/the documentation served at proofofstock.xyz/docs

Licence, security, contact

来源：README.md，提交 67d8d53

工具

6

find_stock_token

Find a stock token

Find issuer-listed tokenized stocks on a chain by ticker, company name or ISIN. Returns the official contract addresses. An empty result says only that the issuer lists no such token, nothing about impostors. Two chains: base (Coinbase's tokens, symbols end in "c", e.g. NVDAc) and robinhood (Robinhood's, e.g. NVDA). When the user names no chain, call it for both. Facts with their time and source, not advice: https://proofofstock.xyz/docs/legal.md

输入参数chain必填query必填

list_stock_tokens

List an issuer registry

List every token in a chain's issuer registry: symbol, name, contract address, ISIN, multiplier, whether it is minted on the chain and whether the issuer publishes a reference price. The answer opens with the exact count (also the `count` field); quote that number, do not estimate it from the list. On Base many listed tokens are not minted yet and do not trade (`minted`). Two chains: base (Coinbase's tokens, symbols end in "c", e.g. NVDAc) and robinhood (Robinhood's, e.g. NVDA). When the user names no chain, call it for both. Facts with their time and source, not advice: https://proofofstock.xyz/docs/legal.md

输入参数chain必填

stock_passport

Stock token passport

Passport of one token address: whether it is in the issuer registry (and, if not, which listed stock its name imitates); the issuer reference price and its age; the latest DEX price and its premium over the reference; the premium series split by US market session; and every gap named. Readings are recorded every 15 minutes (latest.cadence_s), so "latest" is a recorded reading, not a live quote: see latest.age_s. premium compares the latest on-chain price with the issuer reference, whose own age is reference.age_s; when the two are far apart in time, latest.premium_at_reference_time gives the premium of one moment. sources names every source and the pool rule. Every answer opens with one plain sentence; quote it. In the JSON, premium and spread are FRACTIONS (0.01 = 1%; premium > 0 means the on-chain price is above the issuer's), *_age_s and age_s are seconds before generated_at, prices are USD per token. A token is worth `multiplier` shares, and the issuer's reference is already per token. reference.kind: nav_total_return = Coinbase's NAV, token_bid_ask_mid = the mid of Robinhood's token bid/ask. notes are codes for every gap (e.g. reading_stale = our last reading is over 30 min old, pools_capped = the pool count is a minimum). Two chains: base (Coinbase's tokens, symbols end in "c", e.g. NVDAc) and robinhood (Robinhood's, e.g. NVDA). When the user names no chain, call it for both. Facts with their time and source, not advice: https://proofofstock.xyz/docs/legal.md

输入参数chain必填hoursaddress必填include_series

verify_stock_tokens

Verify stock token addresses

Before buying a token that claims to be a stock, check its contract address: is it on the issuer's own registry for this chain (Base: Coinbase; robinhood: Robinhood)? Up to 50 addresses per call. listed=true is decided by the exact address alone. listed=false means "not in this issuer's registry", not "fake" (it may be another issuer's token); impostor is set only when the token copies a listed symbol or the issuer's naming, and then listed_address is the real one. If the registry cannot be read the call fails rather than answering false. Facts, not advice.

输入参数chain必填addresses必填

recent_impostors

Recent impostors

Tokens on a chain whose symbol or name copies an issuer-listed stock token while their contract is not in that registry, newest first (at most 50), optionally since an ISO time. Each names what it imitates and the listed address. A claim with evidence, not a verdict.

输入参数chain必填since

compare_venues

Compare one share across venues

For shares listed on BOTH Base (Coinbase) and Robinhood Chain (Robinhood), matched by ISIN: per venue the on-chain price's premium over that venue's own issuer reference, the reference kind and age, the deepest pool's liquidity and the multiplier, and the gap (Robinhood premium minus Base premium) when both are current. Raw prices are never compared: multipliers and references differ (Coinbase NAV vs Robinhood bid/ask), so a gap is not a price difference or an arbitrage. Name a share by isin or by ticker (NVDA, or NVDAc); with neither, the 20 rows with the largest gap. A missing premium carries its reason; a reading older than 30 min is flagged stale and gets no gap. Facts, not advice.

输入参数isinsymbol

版本历史

1
  1. v0.5.0最新Nov 12, 2026

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