{
 "schema_ver": "card1",
 "card_id": "PSL-BTC-SRC-blockchain_com",
 "card_type": "source",
 "criteria_ver": "c2",
 "legend_ver": "lg1",
 "published_at": "2026-09-22T06:24:34Z",
 "observed_at_max": "2026-09-19T23:58:50Z",
 "staleness_days": 2,
 "citing_allowed": true,
 "matrix": {
  "rows": [],
  "cols": [],
  "cells": []
 },
 "quotable": [
  "源 `blockchain_com` 的登记卡：角色 comparison；判据与口径逐字见 /btc/meta/criteria.json。",
  "Source card for `blockchain_com`: role comparison; judgement and caliber verbatim from /btc/meta/criteria.json."
 ],
 "labels": {},
 "citations": {
  "apa": "PSL. (2026). 源卡 blockchain_com [Source card blockchain_com]. PSL 链上计量系统. https://psl.antinel.com/btc/source/blockchain_com.html",
  "bibtex": "@misc{psl_btc_src_blockchain_com, title={源卡 blockchain_com}, author={PSL}, year={2026},\n howpublished={\\url{https://psl.antinel.com/btc/source/blockchain_com.html}},\n note={criteria_ver=c2; data as of 2026-09-19T23:58:50Z}}"
 },
 "source": "blockchain_com",
 "role": "comparison",
 "verification": "verified:M2 三日逐日相等 818399／653862／652518（证据原文见 /btc/meta/criteria.json 的「口径」字段）",
 "judgement": "name: \"Confirmed Transactions Per Day\"；unit: \"Transactions\"；period: \"day\"；description: \"The number of daily confirmed Bitcoin transactions.\"（逐字取自 https://www.blockchain.com/api/charts_api 的 Response 示例）。图表页 Methodology 逐字：\"Transactions from confirmed blocks are simply summed up to obtain daily numbers\"；Notes 逐字：\"Transactions are accounted for only once they are included in a block.\"；API 文档逐字：\"The timezone is UTC.\"",
 "caliber": "实测判定：含 coinbase。依据＝2026-09-15／16／17 三日该源值与本方双节点逐块复算的 M2（含 coinbase）逐日相等（818399／653862／652518），与 M3（不含 coinbase）逐日不等。日界＝UTC 00:00:00（响应 x 时间戳逐日为该 UTC 日零点）。文档未声明 coinbase 是否计入——该点由本探针实测补上。",
 "license": "未闭合。《Blockchain.com User Agreement》（最后更新 2026-08-27）正文无再分发／爬取／署名／速率条款；Section 1.1 将独立的《API Agreement》并入引用（incorporated by reference），Section 1.3 将 \"our APIs\" 列为 Services；Section 2.1 为 \"revocable, limited, non-exclusive, non-transferable license\"。**《API Agreement》正文未获取 ⇒ 转述与再发布许可无法判定**。",
 "fetched_at": "2026-09-18",
 "integrity": {
  "algo": "sha256",
  "canonical": "json-sorted-compact-utf8",
  "scope": "card-self",
  "value": "19b7c0ff8cae51ebec78ea74dcce18ccdfb766aaf97f2024938530edb2c10a1a"
 }
}