Pith Number

pith:2FDFMFBN

pith:1998:2FDFMFBNAL7EHCMRH7G6OUUS3P

not attested not anchored not stored refs pending

Black Holes in Two Dimensions

Friedrich W. Hehl, Yuri N. Obukhov

arxiv:hep-th/9807101 v1 · 1998-07-14 · hep-th · 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{2FDFMFBNAL7EHCMRH7G6OUUS3P}

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	2026-05-18T01:38:36.825321Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d14656142d02fe4389913fcde75292dbc86ec9db8a91e8814fddde150581b035

Aliases

arxiv: hep-th/9807101 · arxiv_version: hep-th/9807101v1 · doi: 10.48550/arxiv.hep-th/9807101 · pith_short_12: 2FDFMFBNAL7E · pith_short_16: 2FDFMFBNAL7EHCMR · pith_short_8: 2FDFMFBN

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/2FDFMFBNAL7EHCMRH7G6OUUS3P \
  | 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: d14656142d02fe4389913fcde75292dbc86ec9db8a91e8814fddde150581b035

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6dbf553a989c9eb622acc7052494a5fb90ae827d641656201caccd144273843",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1998-07-14T21:20:31Z",
    "title_canon_sha256": "57de15abfb31850b187491df016b1e49a743d5dea9f71c023450c1b31a98df9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9807101",
    "kind": "arxiv",
    "version": 1
  }
}