Pith Number

pith:ZC7V5AL5

pith:2017:ZC7V5AL5NQNJMIUR53GE46ITS4

not attested not anchored not stored refs pending

Effects of Sound Suppressors on Muzzle Velocity, Bullet Yaw, and Drag

Amy Courtney, Elya Courtney, Michael Courtney, Roy Couvillion

arxiv:1802.05748 v1 · 2017-12-05 · physics.pop-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{ZC7V5AL5NQNJMIUR53GE46ITS4}

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	2026-05-18T00:23:11.146328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8bf5e817d6c1a962291eecc4e791397130b4b42e8d35ad24313d4508336f493

Aliases

arxiv: 1802.05748 · arxiv_version: 1802.05748v1 · doi: 10.48550/arxiv.1802.05748 · pith_short_12: ZC7V5AL5NQNJ · pith_short_16: ZC7V5AL5NQNJMIUR · pith_short_8: ZC7V5AL5

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/ZC7V5AL5NQNJMIUR53GE46ITS4 \
  | 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: c8bf5e817d6c1a962291eecc4e791397130b4b42e8d35ad24313d4508336f493

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "856b4704bbae96f2d6ab15895f0ca5239c9709374bd3fab586c878ba6db2fced",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2017-12-05T15:49:07Z",
    "title_canon_sha256": "426ee1decbe3a4c65f9d3c4159deaabade04e80fd1f589c22f16900c40d15897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05748",
    "kind": "arxiv",
    "version": 1
  }
}