Pith Number

pith:4XDPJBQM

pith:2004:4XDPJBQMZ4TQDGO6YWGKYL2YLE

not attested not anchored not stored refs pending

Laboratory Tests of Gravitational Physics Using a Cryogenic Torsion Pendulum

(2) University of Washington), E. C. Berg (1), Irvine, J. H. Steffen (2), M. K. Bantel (1), M. W. Moore (2), P. E. Boynton (2), R. D. Newman (1) ((1) University of California, T. Inoue (1), W. D. Cross (1)

arxiv:gr-qc/0403021 v2 · 2004-03-04 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4XDPJBQMZ4TQDGO6YWGKYL2YLE}

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	2026-05-18T00:59:50.413167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5c6f4860ccf270199dec58cac2f58593b1ca7abf1ccb60a55e7bc97f4845629

Aliases

arxiv: gr-qc/0403021 · arxiv_version: gr-qc/0403021v2 · doi: 10.48550/arxiv.gr-qc/0403021 · pith_short_12: 4XDPJBQMZ4TQ · pith_short_16: 4XDPJBQMZ4TQDGO6 · pith_short_8: 4XDPJBQM

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/4XDPJBQMZ4TQDGO6YWGKYL2YLE \
  | 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: e5c6f4860ccf270199dec58cac2f58593b1ca7abf1ccb60a55e7bc97f4845629

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a86e92cf6754f8b767f977c61d9a044ca9903bed1ada9ff7b9001953a4471892",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-03-04T00:40:27Z",
    "title_canon_sha256": "18c6d1fef715479b3f3f39d2bb84adaeb167103ec396e103f2571468978ceeba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0403021",
    "kind": "arxiv",
    "version": 2
  }
}