Pith Number

pith:7HLKZTZE

pith:2009:7HLKZTZELALCDVVL47BMTZDWF4

not attested not anchored not stored refs pending

A Black Hole Levitron

Erik P. Verlinde, Xerxes D. Arsiwalla

arxiv:0902.0002 v1 · 2009-02-02 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7HLKZTZELALCDVVL47BMTZDWF4}

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	2026-05-18T03:24:08.071152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9d6accf24581621d6abe7c2c9e4762f353dcd745e497215ce69e8cc775dff60

Aliases

arxiv: 0902.0002 · arxiv_version: 0902.0002v1 · doi: 10.48550/arxiv.0902.0002 · pith_short_12: 7HLKZTZELALC · pith_short_16: 7HLKZTZELALCDVVL · pith_short_8: 7HLKZTZE

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/7HLKZTZELALCDVVL47BMTZDWF4 \
  | 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: f9d6accf24581621d6abe7c2c9e4762f353dcd745e497215ce69e8cc775dff60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "375b2fe15c21aa2bb49bb88f603b79e68caf0e3abff6405c180bb348757689af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-02-02T18:33:03Z",
    "title_canon_sha256": "f5556e26e57f8fb8995ebaf3ad59b9cd8b5652b170e1464e737ed62e6c6d1d65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0002",
    "kind": "arxiv",
    "version": 1
  }
}