Pith Number

pith:4HW4CWYX

pith:2015:4HW4CWYXFLTLZKVBBPSA4CSXYB

not attested not anchored not stored refs pending

Why GPS makes distances bigger than they are

Peter Ranacher, Richard Brunauer, Siegfried Reich, Stefan Christiaan Van der Spek, Wolfgang Trutschnig

arxiv:1504.04504 v2 · 2015-04-17 · physics.ins-det

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HW4CWYXFLTLZKVBBPSA4CSXYB}

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	2026-05-18T01:36:53.872293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1edc15b172ae6bcaaa10be40e0a57c046a14f4024577878f058bf1f725634cf

Aliases

arxiv: 1504.04504 · arxiv_version: 1504.04504v2 · doi: 10.48550/arxiv.1504.04504 · pith_short_12: 4HW4CWYXFLTL · pith_short_16: 4HW4CWYXFLTLZKVB · pith_short_8: 4HW4CWYX

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/4HW4CWYXFLTLZKVBBPSA4CSXYB \
  | 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: e1edc15b172ae6bcaaa10be40e0a57c046a14f4024577878f058bf1f725634cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad1d3b50bb4eb2915a7a1109ef1e14b2568c279dc7d57833b6065c35bac6d976",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2015-04-17T13:39:18Z",
    "title_canon_sha256": "8c5ce7b1056b2e2eda4f25ad2c715af2c20bb3440da846c23f3b9dedf38176d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04504",
    "kind": "arxiv",
    "version": 2
  }
}