Pith Number

pith:GGU4X4BQ

pith:2009:GGU4X4BQRXYWRH4NPW4FGES77I

not attested not anchored not stored refs pending

The optical structure of the starburst galaxy M82 - I: Dynamics of the disk and inner-wind

2), (2) STScI & ESA, (3) Uni of Wisconsin-Madison, (4) Gemini-S, (5) IoA Cambridge), G. Trancho (4), I. S. Konstantopoulos (1) ((1) UCL London, J. S. Gallagher III (3), L. J. Smith (1, M. S. Westmoquette (1), N. Bastian (5)

arxiv:0902.0064 v1 · 2009-01-31 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GGU4X4BQRXYWRH4NPW4FGES77I}

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	2026-05-18T04:29:16.943041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31a9cbf0308df1689f8d7db853125ffa0c768c35fda0e78bbeb0da46f2062fac

Aliases

arxiv: 0902.0064 · arxiv_version: 0902.0064v1 · doi: 10.48550/arxiv.0902.0064 · pith_short_12: GGU4X4BQRXYW · pith_short_16: GGU4X4BQRXYWRH4N · pith_short_8: GGU4X4BQ

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/GGU4X4BQRXYWRH4NPW4FGES77I \
  | 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: 31a9cbf0308df1689f8d7db853125ffa0c768c35fda0e78bbeb0da46f2062fac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b95ce6b5ac20d565ac461f2aed2c341fe1b0a177faf786ed43730bb9e29d4f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-31T12:58:37Z",
    "title_canon_sha256": "13fee71a0ae6eb0004446479defe25f244eb41de8db1c320c7076caed9260268"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0064",
    "kind": "arxiv",
    "version": 1
  }
}