Pith Number

pith:4BJYUGZA

pith:2002:4BJYUGZA2CNTBJNGZFXVCFJGBX

not attested not anchored not stored refs pending

Comment on "Uncertainty in measurements of distance"

H. van Dam (University of North Carolina), Y. Jack Ng

arxiv:gr-qc/0209021 v1 · 2002-09-06 · gr-qc · hep-th · quant-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{4BJYUGZA2CNTBJNGZFXVCFJGBX}

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.

Cited by

1 paper in Pith

Salecker-Wigner-Karolyhazy Gedankenexperiment in light of the self-gravity

Receipt and verification

First computed	2026-07-04T16:33:46.511991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0538a1b20d09b30a5a6c96f5115260de5e468c6d6024754af8418ffdf2de685

Aliases

arxiv: gr-qc/0209021 · arxiv_version: gr-qc/0209021v1 · doi: 10.48550/arxiv.gr-qc/0209021 · pith_short_12: 4BJYUGZA2CNT · pith_short_16: 4BJYUGZA2CNTBJNG · pith_short_8: 4BJYUGZA

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/4BJYUGZA2CNTBJNGZFXVCFJGBX \
  | 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: e0538a1b20d09b30a5a6c96f5115260de5e468c6d6024754af8418ffdf2de685

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "836c20e92e31d082018fce0a76628006c5eb06a65a499c5c825fc052b4654fd7",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2002-09-06T21:45:01Z",
    "title_canon_sha256": "50ac2a92e11200ad782bd1991458194fe2f94f67f9685a33b540878d3d656dc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0209021",
    "kind": "arxiv",
    "version": 1
  }
}