Pith Number

pith:UGUMKZ57

pith:1998:UGUMKZ57Q5NED33JQTVBTUGPDV

not attested not anchored not stored refs pending

On Quantization of Black Holes

I.B. Khriplovich

arxiv:gr-qc/9804004 v1 · 1998-04-02 · 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{UGUMKZ57Q5NED33JQTVBTUGPDV}

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	2026-05-18T02:37:28.240108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1a8c567bf875a41ef6984ea19d0cf1d45d624138f79afad9ca00a725c8380ea

Aliases

arxiv: gr-qc/9804004 · arxiv_version: gr-qc/9804004v1 · doi: 10.48550/arxiv.gr-qc/9804004 · pith_short_12: UGUMKZ57Q5NE · pith_short_16: UGUMKZ57Q5NED33J · pith_short_8: UGUMKZ57

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/UGUMKZ57Q5NED33JQTVBTUGPDV \
  | 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: a1a8c567bf875a41ef6984ea19d0cf1d45d624138f79afad9ca00a725c8380ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c706757628ee41a4eaa127bd297984bba92dc14c5045f83e43ae5829289d54f",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1998-04-02T11:03:08Z",
    "title_canon_sha256": "8012691cf7f553395dd89be6050ee91481abec3c7a5a73d567fdad0a408d1370"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9804004",
    "kind": "arxiv",
    "version": 1
  }
}