Pith Number

pith:EJUQMDKX

pith:1998:EJUQMDKX5R4A7NFNBUV4D3MXBP

not attested not anchored not stored refs pending

ROSAT PSPC observations of the outer regions of the Perseus cluster of galaxies

A.C. Fabian, D.A. White, S. Ettori

arxiv:astro-ph/9806375 v1 · 1998-06-29 · 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{EJUQMDKX5R4A7NFNBUV4D3MXBP}

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	2026-05-18T01:40:14.012310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2269060d57ec780fb4ad0d2bc1ed970bee13999a85f0f4327e098fa8e752efd0

Aliases

arxiv: astro-ph/9806375 · arxiv_version: astro-ph/9806375v1 · doi: 10.48550/arxiv.astro-ph/9806375 · pith_short_12: EJUQMDKX5R4A · pith_short_16: EJUQMDKX5R4A7NFN · pith_short_8: EJUQMDKX

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/EJUQMDKX5R4A7NFNBUV4D3MXBP \
  | 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: 2269060d57ec780fb4ad0d2bc1ed970bee13999a85f0f4327e098fa8e752efd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e976532a4081230e8ea218bb5a94d2eba4d48c16aebbfda2db3dee558ad5abe3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-06-29T17:50:09Z",
    "title_canon_sha256": "187f51cf2d67650abc78928f8d71227c8f268c31cbbf07b6530613241b7d5948"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9806375",
    "kind": "arxiv",
    "version": 1
  }
}