Pith Number

pith:3UPKXUIT

pith:2009:3UPKXUITZINUABDAT6G5LIVC7H

not attested not anchored not stored refs pending

Hitting the Bull's-eye: The Radial Profile of Accretion and Star Formation in the Milky Way

J. E. G. Peek

arxiv:0904.2000 v1 · 2009-04-13 · astro-ph.GA · 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{3UPKXUITZINUABDAT6G5LIVC7H}

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	2026-05-18T04:29:43.551724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1eabd113ca1b4004609f8dd5a2a2f9c7c3e1835eee7b2c36334b5356ae5872

Aliases

arxiv: 0904.2000 · arxiv_version: 0904.2000v1 · doi: 10.48550/arxiv.0904.2000 · pith_short_12: 3UPKXUITZINU · pith_short_16: 3UPKXUITZINUABDA · pith_short_8: 3UPKXUIT

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/3UPKXUITZINUABDAT6G5LIVC7H \
  | 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: dd1eabd113ca1b4004609f8dd5a2a2f9c7c3e1835eee7b2c36334b5356ae5872

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "180a141b33f65d8351598c280e05219d17c94df39fe191809b70db224f3eee72",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-13T20:00:05Z",
    "title_canon_sha256": "fdfa8274d7602731f9f85a6bbaf6d2516c056212983657181350c996ed9a6af4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2000",
    "kind": "arxiv",
    "version": 1
  }
}