Pith Number

pith:F72LICYP

pith:2006:F72LICYPCRGHVUI3JF65MSEWCQ

not attested not anchored not stored refs pending

Gas metallicity diagnostics in star-forming galaxies

2), (2) National Astronomical Observatory of Japan), Alessandro Marconi (1) ((1) Arcetri Observatory, Roberto Maiolino (1), Tohru Nagao (1

arxiv:astro-ph/0603580 v2 · 2006-03-21 · 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{F72LICYPCRGHVUI3JF65MSEWCQ}

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	2026-05-18T02:40:25.394345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ff4b40b0f144c7ad11b497dd648961402e5ba47814807cb0e2572f41f12d3cb

Aliases

arxiv: astro-ph/0603580 · arxiv_version: astro-ph/0603580v2 · doi: 10.48550/arxiv.astro-ph/0603580 · pith_short_12: F72LICYPCRGH · pith_short_16: F72LICYPCRGHVUI3 · pith_short_8: F72LICYP

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/F72LICYPCRGHVUI3JF65MSEWCQ \
  | 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: 2ff4b40b0f144c7ad11b497dd648961402e5ba47814807cb0e2572f41f12d3cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a70ec2797595984bf4ec909a94ca4a88e044c316f2eaac1786fa2375193ce9ff",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-03-21T17:04:16Z",
    "title_canon_sha256": "a0fb7df1bcaf327614848ff9a5b768fca1313f7e8418482f0739db618b89c593"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0603580",
    "kind": "arxiv",
    "version": 2
  }
}