Pith Number

pith:CQJBB4FF

pith:2014:CQJBB4FFGRAK6E3HSGBRPW7KTI

not attested not anchored not stored refs pending

Threats from space: 20 years of progress

H.J. Haubold, J.L. Remo

arxiv:1409.1992 v1 · 2014-09-06 · physics.hist-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{CQJBB4FFGRAK6E3HSGBRPW7KTI}

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	2026-05-18T02:43:08.863202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

141210f0a53440af1367918317dbea9a1fccfb03365160c96a821359535d9e5a

Aliases

arxiv: 1409.1992 · arxiv_version: 1409.1992v1 · doi: 10.48550/arxiv.1409.1992 · pith_short_12: CQJBB4FFGRAK · pith_short_16: CQJBB4FFGRAK6E3H · pith_short_8: CQJBB4FF

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/CQJBB4FFGRAK6E3HSGBRPW7KTI \
  | 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: 141210f0a53440af1367918317dbea9a1fccfb03365160c96a821359535d9e5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c13a1cba4f423e6535eae434515e21baf6d2aca6b31e68fdac4ecbaa5ffbb594",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2014-09-06T07:25:26Z",
    "title_canon_sha256": "ddd7f9f6a9b8dd6c0827893cf33b26bbc81ce166ecc1b4af345305824b517d50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1992",
    "kind": "arxiv",
    "version": 1
  }
}