Pith Number

pith:EJ5PJ4OF

pith:2005:EJ5PJ4OFDBT6B37ATVV3F6XGEG

not attested not anchored not stored refs pending

An Overview of the Performance of the Chandra X-Ray Observatory

C.E. Grant, D. Dewey, H.L. Marshall, J.J. Drake, M. Bautz, M.C. Weisskopf, R.A. Cameron, S.S. Murray, T.L. Aldcroft

arxiv:astro-ph/0503319 v1 · 2005-03-15 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EJ5PJ4OFDBT6B37ATVV3F6XGEG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T16:51:00.139409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

227af4f1c51867e0efe09d6bb2fae6219bbcb8f4e9bca6cff4850919ac710295

Aliases

arxiv: astro-ph/0503319 · arxiv_version: astro-ph/0503319v1 · doi: 10.48550/arxiv.astro-ph/0503319 · pith_short_12: EJ5PJ4OFDBT6 · pith_short_16: EJ5PJ4OFDBT6B37A · pith_short_8: EJ5PJ4OF

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EJ5PJ4OFDBT6B37ATVV3F6XGEG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 227af4f1c51867e0efe09d6bb2fae6219bbcb8f4e9bca6cff4850919ac710295

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49213316977de60e483d2c7c93e65e5df408031e31227bdfb23a37fef0f5f03a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-15T15:53:11Z",
    "title_canon_sha256": "16b7f01f6606a2375720d3b5893d4f2716cf9dd9a3ba88c536027628f84ad87b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503319",
    "kind": "arxiv",
    "version": 1
  }
}