Pith Number

pith:GREZOFJO

pith:1999:GREZOFJO4GDUMZRMMS65LGCKW4

not attested not anchored not stored refs pending

Collisional Consequences of Big Interstellar Grains

E. Gr\"un, M. Landgraf

arxiv:astro-ph/9909333 v1 · 1999-09-20 · 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{GREZOFJO4GDUMZRMMS65LGCKW4}

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	2026-05-18T01:40:12.652763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

344997152ee18746662c64bdd5984ab71f81a006160855adb9cdf5ba6be360fd

Aliases

arxiv: astro-ph/9909333 · arxiv_version: astro-ph/9909333v1 · doi: 10.48550/arxiv.astro-ph/9909333 · pith_short_12: GREZOFJO4GDU · pith_short_16: GREZOFJO4GDUMZRM · pith_short_8: GREZOFJO

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/GREZOFJO4GDUMZRMMS65LGCKW4 \
  | 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: 344997152ee18746662c64bdd5984ab71f81a006160855adb9cdf5ba6be360fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d340c6c211a79374ee4d9c6155bb25b20dd658c7a150ee018b1c7950cb0ad9e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-09-20T14:29:52Z",
    "title_canon_sha256": "2391246a6434c478e88544d8054cea3e0cef6d02de4da455a2b2a5047d3080b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9909333",
    "kind": "arxiv",
    "version": 1
  }
}