Pith Number

pith:UDODFHJJ

pith:2020:UDODFHJJ5FX4HQ7S524ZP46MQ4

not attested not anchored not stored refs pending

Improving TBI Protection Measures and Standards for Combat Helmets

Eric G. Blackman

arxiv:2003.07698 v1 · 2020-03-14 · physics.med-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{UDODFHJJ5FX4HQ7S524ZP46MQ4}

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	2026-07-05T00:48:29.223245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0dc329d29e96fc3c3f2eeb997f3cc873ed895dd6e44d332f496766c248e892c

Aliases

arxiv: 2003.07698 · arxiv_version: 2003.07698v1 · doi: 10.48550/arxiv.2003.07698 · pith_short_12: UDODFHJJ5FX4 · pith_short_16: UDODFHJJ5FX4HQ7S · pith_short_8: UDODFHJJ

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/UDODFHJJ5FX4HQ7S524ZP46MQ4 \
  | 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: a0dc329d29e96fc3c3f2eeb997f3cc873ed895dd6e44d332f496766c248e892c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "866606c5a6fcfce72132a57f19260786c819d89b58e8528260b57a573ad3cf3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2020-03-14T06:26:05Z",
    "title_canon_sha256": "c845adb6a4fe5b7b3d2c392079d1e348d4c367008ef6cbc04b5c124f685f7e22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.07698",
    "kind": "arxiv",
    "version": 1
  }
}