Pith Number

pith:V7MTX3WL

pith:2023:V7MTX3WLZEGSMBTV7FWLMVPK4C

not attested not anchored not stored refs pending

A regular black hole as the final state of evolution of a singular black hole

Chen Lan, Han-Wen Hu, Yan-Gang Miao

arxiv:2303.03931 v4 · 2023-03-07 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V7MTX3WLZEGSMBTV7FWLMVPK4C}

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.

Cited by

2 papers in Pith

Families of regular spacetimes and energy conditions

Receipt and verification

First computed	2026-07-05T07:13:40.614642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afd93beecbc90d260675f96cb655eae0996fbcdc42ec552d7c43dbf06c0954e7

Aliases

arxiv: 2303.03931 · arxiv_version: 2303.03931v4 · doi: 10.48550/arxiv.2303.03931 · pith_short_12: V7MTX3WLZEGS · pith_short_16: V7MTX3WLZEGSMBTV · pith_short_8: V7MTX3WL

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/V7MTX3WLZEGSMBTV7FWLMVPK4C \
  | 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: afd93beecbc90d260675f96cb655eae0996fbcdc42ec552d7c43dbf06c0954e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2aba6f913805ee257b567954a2cd4eeed2559fe382427a98144d0c38d036a97",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2023-03-07T14:38:18Z",
    "title_canon_sha256": "141fd0cfc0649eada7c1454defd62b9477bcb71e99d9f16afe1c2cb1eb0e5d0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.03931",
    "kind": "arxiv",
    "version": 4
  }
}