Pith Number

pith:HKCLGVLO

pith:2012:HKCLGVLOE3ML3FCNDB3RHK7VDJ

not attested not anchored not stored refs pending

A new method to determine the grain size of planetary regolith

Bastian Gundlach, J\"urgen Blum

arxiv:1212.3108 v1 · 2012-12-13 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HKCLGVLOE3ML3FCNDB3RHK7VDJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:52:38.951700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a84b3556e26d8bd944d187713abf51a66f22849e919abb83ab5adf720a7a0c3

Aliases

arxiv: 1212.3108 · arxiv_version: 1212.3108v1 · doi: 10.48550/arxiv.1212.3108 · pith_short_12: HKCLGVLOE3ML · pith_short_16: HKCLGVLOE3ML3FCN · pith_short_8: HKCLGVLO

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/HKCLGVLOE3ML3FCNDB3RHK7VDJ \
  | 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: 3a84b3556e26d8bd944d187713abf51a66f22849e919abb83ab5adf720a7a0c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b0c3401e9c15bf01d1cf8b41e5e2a803cd02570478df909ed0ea9302b9b1da6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-12-13T10:11:48Z",
    "title_canon_sha256": "c20edb145f87ee8e150a6e30bba24f95db0d8da38c3eeceedf21c4e2e1d38109"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3108",
    "kind": "arxiv",
    "version": 1
  }
}