Pith Number

pith:V4RBB3D2

pith:2010:V4RBB3D2NQERRNLN2FZOFXPZEA

not attested not anchored not stored refs pending

The galaxy-wide distributions of mean electron density in the HII regions of M51 and NGC 4449

John E. Beckman, Leonel Guti\'errez

arxiv:1001.0276 v1 · 2010-01-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V4RBB3D2NQERRNLN2FZOFXPZEA}

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	2026-05-18T02:10:05.775923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af2210ec7a6c0918b56dd172e2ddf9200f704ed449c34576598c3a37e0b27a7e

Aliases

arxiv: 1001.0276 · arxiv_version: 1001.0276v1 · doi: 10.48550/arxiv.1001.0276 · pith_short_12: V4RBB3D2NQER · pith_short_16: V4RBB3D2NQERRNLN · pith_short_8: V4RBB3D2

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/V4RBB3D2NQERRNLN2FZOFXPZEA \
  | 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: af2210ec7a6c0918b56dd172e2ddf9200f704ed449c34576598c3a37e0b27a7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a8bbd05f2da013bb08072efabf0c2822a1f992bdae2214ecee090e8277550d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-02T03:50:05Z",
    "title_canon_sha256": "9a1d1290e1727e78d0887d22c4d04aecea0a9fd44964d5152a4156e53db33658"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.0276",
    "kind": "arxiv",
    "version": 1
  }
}