Pith Number

pith:NPGOJ63U

pith:2011:NPGOJ63UJ2DQP5XVWZQ26BSW6F

not attested not anchored not stored refs pending

Measuring Time of Flight Using Satellite-Based Clocks

Ronald A.J. van Elburg

arxiv:1110.2685 v4 · 2011-10-12 · physics.gen-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{NPGOJ63UJ2DQP5XVWZQ26BSW6F}

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	2026-05-18T04:08:03.364939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bcce4fb744e8707f6f5b661af0656f17c39312601faa610354ec3d0f1e0c150

Aliases

arxiv: 1110.2685 · arxiv_version: 1110.2685v4 · doi: 10.48550/arxiv.1110.2685 · pith_short_12: NPGOJ63UJ2DQ · pith_short_16: NPGOJ63UJ2DQP5XV · pith_short_8: NPGOJ63U

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/NPGOJ63UJ2DQP5XVWZQ26BSW6F \
  | 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: 6bcce4fb744e8707f6f5b661af0656f17c39312601faa610354ec3d0f1e0c150

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4466b5ec8e1cc821e72e582333d52579010f66770b97b7b380824f23560c0e74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2011-10-12T15:47:03Z",
    "title_canon_sha256": "b03493fc1c3b4f115936472fe66623096718fef7789154521c1e1cb2c228a303"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2685",
    "kind": "arxiv",
    "version": 4
  }
}