Pith Number

pith:XVAKSMQV

pith:2019:XVAKSMQVLE2DIVMXXLR2A6PDSF

not attested not anchored not stored refs pending

Venus: Key to understanding the evolution of terrestrial planets

Colin Frank Wilson, EVE, Thomas Widemann (the Envision, VL2SP teams)

arxiv:1908.04269 v1 · 2019-08-07 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XVAKSMQVLE2DIVMXXLR2A6PDSF}

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	2026-07-04T23:53:21.905531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd40a932155934345597bae3a079e39162ab3648800215119e465efaef6b193f

Aliases

arxiv: 1908.04269 · arxiv_version: 1908.04269v1 · doi: 10.48550/arxiv.1908.04269 · pith_short_12: XVAKSMQVLE2D · pith_short_16: XVAKSMQVLE2DIVMX · pith_short_8: XVAKSMQV

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/XVAKSMQVLE2DIVMXXLR2A6PDSF \
  | 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: bd40a932155934345597bae3a079e39162ab3648800215119e465efaef6b193f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91d63b9093965b7a28ce1c12233358ecffd23bb306e4dfbf074e0cf7ca7c298a",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-08-07T13:48:13Z",
    "title_canon_sha256": "55ddcc99b2db83cd98f9d2dc8b49855b38222a29eeee3193bc350ad7e913cea5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04269",
    "kind": "arxiv",
    "version": 1
  }
}