Pith Number

pith:NBUD6PMS

pith:2004:NBUD6PMSENHU5KI752GND5NR66

not attested not anchored not stored refs pending

Experimental Challenges for Quantum Gravity

Maxim Pospelov, Robert C. Myers

arxiv:gr-qc/0402028 v1 · 2004-02-04 · 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{NBUD6PMSENHU5KI752GND5NR66}

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	2026-05-18T00:37:00.031000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68683f3d92234f4ea91fee8cd1f5b1f7921ef6308c471bf4f44f6c42921f4658

Aliases

arxiv: gr-qc/0402028 · arxiv_version: gr-qc/0402028v1 · doi: 10.48550/arxiv.gr-qc/0402028 · pith_short_12: NBUD6PMSENHU · pith_short_16: NBUD6PMSENHU5KI7 · pith_short_8: NBUD6PMS

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/NBUD6PMSENHU5KI752GND5NR66 \
  | 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: 68683f3d92234f4ea91fee8cd1f5b1f7921ef6308c471bf4f44f6c42921f4658

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfc9a4a3ff4ea058f87aa961a34d6923160a77d5b5c33105b78a1be0a59af0c0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-02-04T22:10:23Z",
    "title_canon_sha256": "fe2a696d7572d0817545b8fdc1e546fac37937197ea52c68105c7ef00db829c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0402028",
    "kind": "arxiv",
    "version": 1
  }
}