Pith Number

pith:5OLYLOOW

pith:1996:5OLYLOOWXRYBOIG7LBEG5FDR6K

not attested not anchored not stored refs pending

Black holes have no short hair

Daniel Sudarsky, Dar\'io N\'u\~nez, Hernando Quevedo

arxiv:gr-qc/9601020 v1 · 1996-01-12 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5OLYLOOWXRYBOIG7LBEG5FDR6K}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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.

Cited by

1 paper in Pith

Bounds on the photon sphere radius for spherically symmetric black holes in n-dimensional Einstein gravity

Receipt and verification

First computed	2026-05-18T01:09:17.664695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb9785b9d6bc701720df58486e9471f2a78569b15f725ff1b69ff95f337bd7a5

Aliases

arxiv: gr-qc/9601020 · arxiv_version: gr-qc/9601020v1 · doi: 10.48550/arxiv.gr-qc/9601020 · pith_short_12: 5OLYLOOWXRYB · pith_short_16: 5OLYLOOWXRYBOIG7 · pith_short_8: 5OLYLOOW

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/5OLYLOOWXRYBOIG7LBEG5FDR6K \
  | 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: eb9785b9d6bc701720df58486e9471f2a78569b15f725ff1b69ff95f337bd7a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c35d55728b89b12f5fe795a61c82de3087978f3cd5a45835d1846c735f0145f5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1996-01-12T01:03:34Z",
    "title_canon_sha256": "aba396108e2c587673fc61b07fc6357253861eba6e6bc293fdc4eee3a7f7354f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9601020",
    "kind": "arxiv",
    "version": 1
  }
}