Pith Number

pith:4E5UETE4

pith:2009:4E5UETE4DEYHX4FGYCVMR2VDHB

not attested not anchored not stored refs pending

Antigravitation

Sabine Hossenfelder

arxiv:0909.3456 v1 · 2009-09-18 · 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{4E5UETE4DEYHX4FGYCVMR2VDHB}

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	2026-05-18T02:11:46.402633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e13b424c9c19307bf0a6c0aac8eaa338790bf6cde92b6cdf7f34ff6b7b5a6c80

Aliases

arxiv: 0909.3456 · arxiv_version: 0909.3456v1 · doi: 10.48550/arxiv.0909.3456 · pith_short_12: 4E5UETE4DEYH · pith_short_16: 4E5UETE4DEYHX4FG · pith_short_8: 4E5UETE4

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/4E5UETE4DEYHX4FGYCVMR2VDHB \
  | 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: e13b424c9c19307bf0a6c0aac8eaa338790bf6cde92b6cdf7f34ff6b7b5a6c80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7d6592a251ec3a36e880f6b720fa5136ce8686bcd62f235af1d5c748a611332",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-09-18T15:00:40Z",
    "title_canon_sha256": "bd361093b61c8494a8988b31b6e1f1b65b134d4cef6015e6ab2a0423c101677d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3456",
    "kind": "arxiv",
    "version": 1
  }
}