Pith Number

pith:L4NQIODD

pith:2003:L4NQIODDXBJSKUY5JOIC5UVQWX

not attested not anchored not stored refs pending

XMM-Newton Observations of the Perseus Cluster II: Evidence for Gas Motions in the Core

C. Jones (CfA), E.Churazov (MPA, H.B\"ohringer (MPE), IKI), R.Sunyaev (MPA, W. Forman (CfA)

arxiv:astro-ph/0309427 v1 · 2003-09-16 · 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{L4NQIODDXBJSKUY5JOIC5UVQWX}

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	2026-05-18T01:09:03.444432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f1b043863b85325531d4b902ed2b0b5d018ea6b7786d0741b3d5bfb9a5d8a10

Aliases

arxiv: astro-ph/0309427 · arxiv_version: astro-ph/0309427v1 · doi: 10.48550/arxiv.astro-ph/0309427 · pith_short_12: L4NQIODDXBJS · pith_short_16: L4NQIODDXBJSKUY5 · pith_short_8: L4NQIODD

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/L4NQIODDXBJSKUY5JOIC5UVQWX \
  | 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: 5f1b043863b85325531d4b902ed2b0b5d018ea6b7786d0741b3d5bfb9a5d8a10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59785ed7102e87052db9e440e46dfad256ad968374c9d1f1bd178964893f419c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-16T10:02:15Z",
    "title_canon_sha256": "282eeb9f716deb3b63843348c39bca63b7bf902887c7369e416d3cc0146adeca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309427",
    "kind": "arxiv",
    "version": 1
  }
}