Pith Number

pith:UN2KFFMQ

pith:1995:UN2KFFMQJZNA32JF7P73QAHZ2Y

not attested not anchored not stored refs pending

Divergences problem in black hole brick-wall model

F.Belgiorno, S.Liberati

arxiv:gr-qc/9503022 v2 · 1995-03-14 · gr-qc · 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{UN2KFFMQJZNA32JF7P73QAHZ2Y}

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	2026-07-04T15:58:48.062882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a374a295904e5a0de925fbffb800f9d617d2d0697c77bfcfe313d68d3c8387bd

Aliases

arxiv: gr-qc/9503022 · arxiv_version: gr-qc/9503022v2 · doi: 10.48550/arxiv.gr-qc/9503022 · pith_short_12: UN2KFFMQJZNA · pith_short_16: UN2KFFMQJZNA32JF · pith_short_8: UN2KFFMQ

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/UN2KFFMQJZNA32JF7P73QAHZ2Y \
  | 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: a374a295904e5a0de925fbffb800f9d617d2d0697c77bfcfe313d68d3c8387bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e441db7d7f38a3afcd9c63471ffa498fec26fa7eac84326f14eeab424b39e3cc",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1995-03-14T15:11:13Z",
    "title_canon_sha256": "44037254288fd17e0986887d5eedb1d56f5b3c0f1fcb9464eea1b3d69d44a76e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9503022",
    "kind": "arxiv",
    "version": 2
  }
}