Pith Number

pith:37VPXWAV

pith:2001:37VPXWAVU3OKIW3KQLRW3VANUU

not attested not anchored not stored refs pending

Testing the Dirac equation

Christian J. Bord\'e, Claus L\"ammerzahl

arxiv:gr-qc/0101095 v1 · 2001-01-24 · 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{37VPXWAVU3OKIW3KQLRW3VANUU}

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	2026-05-18T00:55:39.956714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfeafbd815a6dca45b6a82e36dd40da50faa654a63c1122d6b2e6fbd42f7e205

Aliases

arxiv: gr-qc/0101095 · arxiv_version: gr-qc/0101095v1 · doi: 10.48550/arxiv.gr-qc/0101095 · pith_short_12: 37VPXWAVU3OK · pith_short_16: 37VPXWAVU3OKIW3K · pith_short_8: 37VPXWAV

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/37VPXWAVU3OKIW3KQLRW3VANUU \
  | 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: dfeafbd815a6dca45b6a82e36dd40da50faa654a63c1122d6b2e6fbd42f7e205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d7f7a7cb5df25a8a330cb50a42217d86ed2c5b5e304990ef67ae02dc5b0e30a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-01-24T13:36:12Z",
    "title_canon_sha256": "db195f091371a20cf1ae26a43fedd31eac3829c0213a50448cee5bb193c1b144"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0101095",
    "kind": "arxiv",
    "version": 1
  }
}