Pith Number

pith:JO4TURMP

pith:2015:JO4TURMPYPIM6NWHAPOPFF52XP

not attested not anchored not stored refs pending

Shadow of a naked singularity

N\'estor Ortiz, Olivier Sarbach, Thomas Zannias

arxiv:1505.07017 v2 · 2015-05-26 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JO4TURMPYPIM6NWHAPOPFF52XP}

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.

Receipt and verification

First computed	2026-05-18T01:33:33.642898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bb93a458fc3d0cf36c703dcf297babbc25b16d0c696f6eea57f6ac383f4bef5

Aliases

arxiv: 1505.07017 · arxiv_version: 1505.07017v2 · doi: 10.48550/arxiv.1505.07017 · pith_short_12: JO4TURMPYPIM · pith_short_16: JO4TURMPYPIM6NWH · pith_short_8: JO4TURMP

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/JO4TURMPYPIM6NWHAPOPFF52XP \
  | 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: 4bb93a458fc3d0cf36c703dcf297babbc25b16d0c696f6eea57f6ac383f4bef5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02db5cd1fee41594b52f089059400d8b2007da263a1d2c1f94e6e5f5e63f9e8b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-05-26T15:42:49Z",
    "title_canon_sha256": "d0b079c1fd82ce0579c3e23100fb1b0da2a9774dcdbf1b43a81a361dd24964e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07017",
    "kind": "arxiv",
    "version": 2
  }
}