Pith Number

pith:QXPE4IFD

pith:2011:QXPE4IFDM3GMPIURIG4ZN2NG6R

not attested not anchored not stored refs pending

The exit velocity of a compressed air cannon

M. J. Madsen, T. R. Buresh, Z. J. Rohrbach

arxiv:1106.2803 v1 · 2011-06-14 · physics.pop-ph · physics.class-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{QXPE4IFDM3GMPIURIG4ZN2NG6R}

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	2026-05-18T02:01:37.301661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85de4e20a366ccc7a29141b996e9a6f46a910ce3a2848c5607d39187c26b9a52

Aliases

arxiv: 1106.2803 · arxiv_version: 1106.2803v1 · doi: 10.48550/arxiv.1106.2803 · pith_short_12: QXPE4IFDM3GM · pith_short_16: QXPE4IFDM3GMPIUR · pith_short_8: QXPE4IFD

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/QXPE4IFDM3GMPIURIG4ZN2NG6R \
  | 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: 85de4e20a366ccc7a29141b996e9a6f46a910ce3a2848c5607d39187c26b9a52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82b463e6a98993257727271f0ee988eb373e2b8e544aab055c9c29273a6f5743",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2011-06-14T17:18:53Z",
    "title_canon_sha256": "7f799424788ee5916775581b9b3dfb01336d79ed7f65b4fc8e3ac32ded3db423"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.2803",
    "kind": "arxiv",
    "version": 1
  }
}