Pith Number

pith:OVFOMVL7

pith:1999:OVFOMVL7QCBH3GNE3YPF2DRUVZ

not attested not anchored not stored refs pending

Examples of Black Holes in Two-Time Physics

Sascha Vongehr

arxiv:hep-th/9907077 v3 · 1999-07-11 · 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{OVFOMVL7QCBH3GNE3YPF2DRUVZ}

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	2026-07-04T14:33:29.171396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

754ae6557f80827d99a4de1e5d0e34ae7dbe9c0f9da92aa9d7d79011d6d66b25

Aliases

arxiv: hep-th/9907077 · arxiv_version: hep-th/9907077v3 · doi: 10.48550/arxiv.hep-th/9907077 · pith_short_12: OVFOMVL7QCBH · pith_short_16: OVFOMVL7QCBH3GNE · pith_short_8: OVFOMVL7

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/OVFOMVL7QCBH3GNE3YPF2DRUVZ \
  | 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: 754ae6557f80827d99a4de1e5d0e34ae7dbe9c0f9da92aa9d7d79011d6d66b25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb1affe430f503c080c493f82f2ed80fc3a733a4e50f1fd2f400476abf3e0ed7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-07-11T22:16:45Z",
    "title_canon_sha256": "820cfa1c782e8f13fb9d96332cdce498cceaecbf266de71fae09fc5f7277593e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9907077",
    "kind": "arxiv",
    "version": 3
  }
}