Pith Number

pith:ALY2QNJD

pith:2018:ALY2QNJD4AOGZHMU7T5KG24OP4

not attested not anchored not stored refs pending

The American Space Exploration Narrative from the Cold War through the Obama Administration

Dora Holland, Jack O. Burns

arxiv:1803.11181 v1 · 2018-03-29 · astro-ph.IM · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ALY2QNJD4AOGZHMU7T5KG24OP4}

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	2026-05-18T00:19:48.286969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02f1a83523e01c6c9d94fcfaa36b8e7f3d5625839a192f043d46549f13520ecf

Aliases

arxiv: 1803.11181 · arxiv_version: 1803.11181v1 · doi: 10.48550/arxiv.1803.11181 · pith_short_12: ALY2QNJD4AOG · pith_short_16: ALY2QNJD4AOGZHMU · pith_short_8: ALY2QNJD

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/ALY2QNJD4AOGZHMU7T5KG24OP4 \
  | 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: 02f1a83523e01c6c9d94fcfaa36b8e7f3d5625839a192f043d46549f13520ecf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afdb41eed7fd2345da3a25b29937060ce08c6711210076df7c0c0bb87dc1d7cc",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-03-29T17:54:00Z",
    "title_canon_sha256": "1b3158a269aff0a04315b65a292cb3e268c4ba7ffcbafdc8473d6e6eb0b33bf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.11181",
    "kind": "arxiv",
    "version": 1
  }
}