Pith Number

pith:6JTYMDUD

pith:1997:6JTYMDUDWBK2Y54MMR5KAQJ7W2

not attested not anchored not stored refs pending

A very reduced upper limit on the interstellar abundance of beryllium

Alfred Vidal-Madjar, Guillaume H\'ebrard, Martin Lemoine, Roger Ferlet

arxiv:astro-ph/9702225 v1 · 1997-02-26 · 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{6JTYMDUDWBK2Y54MMR5KAQJ7W2}

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	2026-05-18T01:07:38.656753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763

Aliases

arxiv: astro-ph/9702225 · arxiv_version: astro-ph/9702225v1 · doi: 10.48550/arxiv.astro-ph/9702225 · pith_short_12: 6JTYMDUDWBK2 · pith_short_16: 6JTYMDUDWBK2Y54M · pith_short_8: 6JTYMDUD

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/6JTYMDUDWBK2Y54MMR5KAQJ7W2 \
  | 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: f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8894c2fc5dab019531f9f208384f59d336b6bc648d27243357eeb1c2dde3f32c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-02-26T08:32:40Z",
    "title_canon_sha256": "8071c9fd54707033ba0e7e2c3adede3ede4ebae22b95434b4451ff6bcb3b9e5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9702225",
    "kind": "arxiv",
    "version": 1
  }
}