Pith Number

pith:CKE2RFQK

pith:2009:CKE2RFQKOJWXYD4UOXK7GTJ63N

not attested not anchored not stored refs pending

Towards a Dynamical Collision Model of Highly Porous Dust Aggregates

Carsten G\"uttler, J\"urgen Blum, Maya Krause, Ralf J. Geretshauser, Roland Speith

arxiv:0904.4536 v1 · 2009-04-29 · 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{CKE2RFQKOJWXYD4UOXK7GTJ63N}

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	2026-05-18T02:13:49.321300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1289a8960a726d7c0f9475d5f34d3edb766f5ebbd4e8beb4d2e46e349199f3ca

Aliases

arxiv: 0904.4536 · arxiv_version: 0904.4536v1 · doi: 10.48550/arxiv.0904.4536 · pith_short_12: CKE2RFQKOJWX · pith_short_16: CKE2RFQKOJWXYD4U · pith_short_8: CKE2RFQK

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/CKE2RFQKOJWXYD4UOXK7GTJ63N \
  | 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: 1289a8960a726d7c0f9475d5f34d3edb766f5ebbd4e8beb4d2e46e349199f3ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e1750db908571c8eaff99f1aee28ca199ce2938aca44d5b2482a6c73a31d52c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-04-29T05:45:06Z",
    "title_canon_sha256": "b816c9be5e3621ac2134242f5650bed8e59851657a949308a12051574ad677aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4536",
    "kind": "arxiv",
    "version": 1
  }
}