Pith Number

pith:QK2QTYA7

pith:2005:QK2QTYA7TOPBHEWCVPNBQZTBYC

not attested not anchored not stored refs pending

Lorentz-contraction formula from non-simultaneous events

Aleksandar Gjurchinovski

arxiv:physics/0503156 v2 · 2005-03-18 · 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{QK2QTYA7TOPBHEWCVPNBQZTBYC}

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	2026-05-18T03:57:25.571081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82b509e01f9b9e1392c2abda186661c089ce806a121457f745d2251fe2be07a1

Aliases

arxiv: physics/0503156 · arxiv_version: physics/0503156v2 · doi: 10.48550/arxiv.physics/0503156 · pith_short_12: QK2QTYA7TOPB · pith_short_16: QK2QTYA7TOPBHEWC · pith_short_8: QK2QTYA7

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/QK2QTYA7TOPBHEWCVPNBQZTBYC \
  | 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: 82b509e01f9b9e1392c2abda186661c089ce806a121457f745d2251fe2be07a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4941a61748066287eb6d1fcc6576e5fa0cccd1ec5a7053bec8d46caa3d78d09a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2005-03-18T09:03:16Z",
    "title_canon_sha256": "5c61d50beaefac8962f61855987dadcc128e73be82129c5f2d9a34c43f09cb8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0503156",
    "kind": "arxiv",
    "version": 2
  }
}