Pith Number

pith:QPM4IHFZ

pith:2008:QPM4IHFZE4F6DB4V2DPCA3RRNU

not attested not anchored not stored refs pending

Soft X-ray and extreme ultraviolet excess emission from clusters of galaxies

F. Durret, J. Nevalainen, J.S. Kaastra, N. Werner, T. Ohashi

arxiv:0801.0977 v1 · 2008-01-07 · 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{QPM4IHFZE4F6DB4V2DPCA3RRNU}

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	2026-07-04T17:08:19.527249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83d9c41cb9270be18795d0de206e316d24d12214c51f3927e197ccddcedae869

Aliases

arxiv: 0801.0977 · arxiv_version: 0801.0977v1 · doi: 10.48550/arxiv.0801.0977 · pith_short_12: QPM4IHFZE4F6 · pith_short_16: QPM4IHFZE4F6DB4V · pith_short_8: QPM4IHFZ

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/QPM4IHFZE4F6DB4V2DPCA3RRNU \
  | 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: 83d9c41cb9270be18795d0de206e316d24d12214c51f3927e197ccddcedae869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c858f23d9fdeff7f434dceeefefa61f4f1663f39ad0cc983c73118401f1c214c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-07T13:49:06Z",
    "title_canon_sha256": "c85d6a0c43cbb59ec961f731fdafc019b3bda62b8d7904c7c6fbce1a7f7a2bfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.0977",
    "kind": "arxiv",
    "version": 1
  }
}