Pith Number

pith:F472DK7M

pith:2003:F472DK7MYMJFLHJLS3F2SMDJCQ

not attested not anchored not stored refs pending

Metals in the Intergalactic Medium

Bastien Aracil, Christophe Pichon, Jacqueline Bergeron, Patrick Petitjean

arxiv:astro-ph/0307506 v2 · 2003-07-29 · 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{F472DK7MYMJFLHJLS3F2SMDJCQ}

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	2026-07-04T16:51:22.291952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f3fa1abecc312559d2b96cba93069143e9899cb3fa1b56dbb427b53830537e8

Aliases

arxiv: astro-ph/0307506 · arxiv_version: astro-ph/0307506v2 · doi: 10.48550/arxiv.astro-ph/0307506 · pith_short_12: F472DK7MYMJF · pith_short_16: F472DK7MYMJFLHJL · pith_short_8: F472DK7M

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/F472DK7MYMJFLHJLS3F2SMDJCQ \
  | 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: 2f3fa1abecc312559d2b96cba93069143e9899cb3fa1b56dbb427b53830537e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "133da78b1ee5e4cbbb82880eeda6760044980e290cc36bf678dc9b9a26c5daec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-07-29T20:01:55Z",
    "title_canon_sha256": "f820c2b346f9980d7197b2562f85ae7aee6b7f5dcd984ea56b375732b7de868c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0307506",
    "kind": "arxiv",
    "version": 2
  }
}