Pith Number

pith:DFYXPIAV

pith:2018:DFYXPIAVEXEUKFSJ3O2A6XNIGQ

not attested not anchored not stored refs pending

Measuring the local matter density using Gaia DR2

Axel Widmark

arxiv:1811.07911 v2 · 2018-11-19 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DFYXPIAVEXEUKFSJ3O2A6XNIGQ}

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	2026-05-17T23:52:39.803442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

197177a01525c9451649dbb40f5da83405dc78dc358f6c82620edf04a3cea945

Aliases

arxiv: 1811.07911 · arxiv_version: 1811.07911v2 · doi: 10.48550/arxiv.1811.07911 · pith_short_12: DFYXPIAVEXEU · pith_short_16: DFYXPIAVEXEUKFSJ · pith_short_8: DFYXPIAV

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/DFYXPIAVEXEUKFSJ3O2A6XNIGQ \
  | 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: 197177a01525c9451649dbb40f5da83405dc78dc358f6c82620edf04a3cea945

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2a846777d4d5e224dd3a1418c7a05ba49e489fa362c04c1038d90b3664b0019",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-11-19T19:00:03Z",
    "title_canon_sha256": "3755c46c67ed8c1cc6f9487e18d1d6e5b4f3cdb13e90ad895bd3ea87bff32491"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.07911",
    "kind": "arxiv",
    "version": 2
  }
}