Pith Number

pith:FNP2U26E

pith:2003:FNP2U26E66KM2DZSOEBHXPRFR4

not attested not anchored not stored refs pending

Chandra Observation of the Edge-on Galaxy NGC 3556 (M 108): Violent Galactic Disk-halo Interaction Revealed

Judith Irwin, Q. Daniel Wang, Tara Chaves

arxiv:astro-ph/0308150 v1 · 2003-08-08 · 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{FNP2U26E66KM2DZSOEBHXPRFR4}

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	2026-07-04T16:51:26.703931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b5faa6bc4f794cd0f3271027bbe258f2d4231d02ab27bb389a4934a4dc6c1f0

Aliases

arxiv: astro-ph/0308150 · arxiv_version: astro-ph/0308150v1 · doi: 10.48550/arxiv.astro-ph/0308150 · pith_short_12: FNP2U26E66KM · pith_short_16: FNP2U26E66KM2DZS · pith_short_8: FNP2U26E

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/FNP2U26E66KM2DZSOEBHXPRFR4 \
  | 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: 2b5faa6bc4f794cd0f3271027bbe258f2d4231d02ab27bb389a4934a4dc6c1f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddc76ea7f7ec9660ee2b7689320011f1c13da58042c7d8697396f69c109a13dc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-08T19:53:26Z",
    "title_canon_sha256": "91fa31ed5dc780bca6b52973dd371627a6fbba11025eee2147a1f621909a6ff4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308150",
    "kind": "arxiv",
    "version": 1
  }
}