Pith Number

pith:PELGRNKB

pith:2000:PELGRNKBXGDL2DGCAPATY3EACL

not attested not anchored not stored refs pending

Measurements with the Chandra X-Ray Observatory's flight contamination monitor

A. F. Tennant, D. A. Swartz, J. J. Kolodziejczak, M. C. Weisskopf, R. F. Elsner, S. L. O'Dell

arxiv:astro-ph/0004152 v1 · 2000-04-11 · 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{PELGRNKBXGDL2DGCAPATY3EACL}

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	2026-05-18T01:40:48.040544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

791668b541b986bd0cc203c13c6c8012c5f217a3f390b81410ace62b5e32211f

Aliases

arxiv: astro-ph/0004152 · arxiv_version: astro-ph/0004152v1 · doi: 10.48550/arxiv.astro-ph/0004152 · pith_short_12: PELGRNKBXGDL · pith_short_16: PELGRNKBXGDL2DGC · pith_short_8: PELGRNKB

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/PELGRNKBXGDL2DGCAPATY3EACL \
  | 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: 791668b541b986bd0cc203c13c6c8012c5f217a3f390b81410ace62b5e32211f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5811ab1afbc4459dd2499dd593a5a4b4907c09bc3460c0a18975feaff99aa13d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-11T19:08:45Z",
    "title_canon_sha256": "bd6a6e3ad616742d01a9d8578ef0e145f70609a3ae528b215fe68da59dd239b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004152",
    "kind": "arxiv",
    "version": 1
  }
}