Pith Number

pith:KMEUUFUX

pith:2014:KMEUUFUX7QA3LLDOVM6SDHVQK3

not attested not anchored not stored refs pending

Observational distinction between black holes and naked singularities: the role of the redshift function

N\'estor Ortiz, Olivier Sarbach, Thomas Zannias

arxiv:1401.4227 v3 · 2014-01-17 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KMEUUFUX7QA3LLDOVM6SDHVQK3}

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	2026-05-18T01:25:47.724747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53094a1697fc01b5ac6eab3d219eb056d0afbfd9a401f93a0adeaa9f152893f2

Aliases

arxiv: 1401.4227 · arxiv_version: 1401.4227v3 · doi: 10.48550/arxiv.1401.4227 · pith_short_12: KMEUUFUX7QA3 · pith_short_16: KMEUUFUX7QA3LLDO · pith_short_8: KMEUUFUX

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/KMEUUFUX7QA3LLDOVM6SDHVQK3 \
  | 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: 53094a1697fc01b5ac6eab3d219eb056d0afbfd9a401f93a0adeaa9f152893f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2205bdc6199b37eee8c3045aaadcf0445c19b54d2e29d346399d10655416940e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-01-17T02:48:45Z",
    "title_canon_sha256": "dfdd31d21da70fc9c3d2ee2509b88ab6eeea45ad3d9101586712193f672dcd52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.4227",
    "kind": "arxiv",
    "version": 3
  }
}