Pith Number

pith:EP6UFQVK

pith:2002:EP6UFQVKV73XFQHD2W6TTY2D4Y

not attested not anchored not stored refs pending

Far Infrared Emission from Elliptical Galaxies: NGC 4649, NGC 4472, and NGC 4636

F. Brighenti, J.D. Bregman, P. Temi, W. G. Mathews

arxiv:astro-ph/0209597 v1 · 2002-09-27 · 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{EP6UFQVKV73XFQHD2W6TTY2D4Y}

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	2026-07-04T14:12:15.855037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23fd42c2aaaff772c0e3d5bd39e343e622b4e96a8961f53c4551669e08720ac4

Aliases

arxiv: astro-ph/0209597 · arxiv_version: astro-ph/0209597v1 · doi: 10.48550/arxiv.astro-ph/0209597 · pith_short_12: EP6UFQVKV73X · pith_short_16: EP6UFQVKV73XFQHD · pith_short_8: EP6UFQVK

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/EP6UFQVKV73XFQHD2W6TTY2D4Y \
  | 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: 23fd42c2aaaff772c0e3d5bd39e343e622b4e96a8961f53c4551669e08720ac4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "556729cf1f45b6adf2c4fcf27cb214f8ba92126640bef511d4c8b1d89ccc88d7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-27T23:32:47Z",
    "title_canon_sha256": "68a332952d20b1ab3a8b5ba2d839e7c6fdf1fafe6f34e6210921da9dc63ac0dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209597",
    "kind": "arxiv",
    "version": 1
  }
}