Pith Number

pith:2I53WMEL

pith:2026:2I53WMELCZDNCR37NVE2YLO5Q6

not attested not anchored not stored refs pending

The Habitable Worlds Observatory Technology Development Plan

Alice Liu, Breann Sitarski, Feng Zhao, Josh Abel, J. Scott Smith, Lee Feinberg, Matthew Bolcar, Paul Scowen

arxiv:2607.02773 v1 · 2026-07-02 · 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{2I53WMELCZDNCR37NVE2YLO5Q6}

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	2026-07-07T00:16:16.459336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d23bbb308b1646d1477f6d49ac2ddd87a4bd1d74617082a363329604c501f396

Aliases

arxiv: 2607.02773 · arxiv_version: 2607.02773v1 · doi: 10.48550/arxiv.2607.02773 · pith_short_12: 2I53WMELCZDN · pith_short_16: 2I53WMELCZDNCR37 · pith_short_8: 2I53WMEL

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/2I53WMELCZDNCR37NVE2YLO5Q6 \
  | 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: d23bbb308b1646d1477f6d49ac2ddd87a4bd1d74617082a363329604c501f396

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "120f3672d0b0b5313e977ecab2e3136885e3cefa81d1743cedc6f8ab2a21729c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-07-02T21:10:57Z",
    "title_canon_sha256": "8414ff5e51a54856c4b319fde523f9a9337c00b64ce0a8ffe6f6dcc0336ecc9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.02773",
    "kind": "arxiv",
    "version": 1
  }
}