Pith Number

pith:7QU4JWTG

pith:2011:7QU4JWTGAEOUL6D6WXTHMG4WIY

not attested not anchored not stored refs pending

Porosities of Protoplanetary Dust Agglomerates from Collision Experiments

Gerhard Wurm, Ilka Engelhardt, Jens Teiser

arxiv:1108.1271 v1 · 2011-08-05 · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QU4JWTGAEOUL6D6WXTHMG4WIY}

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	2026-05-18T04:09:54.435396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc29c4da66011d45f87eb5e6761b96462ea1c256526b4dcfe902db33a350ac83

Aliases

arxiv: 1108.1271 · arxiv_version: 1108.1271v1 · doi: 10.48550/arxiv.1108.1271 · pith_short_12: 7QU4JWTGAEOU · pith_short_16: 7QU4JWTGAEOUL6D6 · pith_short_8: 7QU4JWTG

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/7QU4JWTGAEOUL6D6WXTHMG4WIY \
  | 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: fc29c4da66011d45f87eb5e6761b96462ea1c256526b4dcfe902db33a350ac83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd4046a7124068c480a54afc022b377dd2893ff382e7a7ace6231b698e14a3cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-08-05T07:59:53Z",
    "title_canon_sha256": "2840a0d775a057dd1e22300e61c90708f06e07a56ba3092c3644abbadef3e9e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1271",
    "kind": "arxiv",
    "version": 1
  }
}