Pith Number

pith:BEXKK5K4

pith:2018:BEXKK5K4LRAHONIDGINWHA6VL3

not attested not anchored not stored refs pending

Closed trapping horizons without singularity

Alexis Helou, Fr\'ed\'eric Lamy, Pierre Bin\'etruy

arxiv:1804.03912 v1 · 2018-04-11 · gr-qc · 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{BEXKK5K4LRAHONIDGINWHA6VL3}

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	2026-05-18T00:04:17.435274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

092ea5755c5c40773503321b6383d55efd7b154907b503877c0081749075a114

Aliases

arxiv: 1804.03912 · arxiv_version: 1804.03912v1 · doi: 10.48550/arxiv.1804.03912 · pith_short_12: BEXKK5K4LRAH · pith_short_16: BEXKK5K4LRAHONID · pith_short_8: BEXKK5K4

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/BEXKK5K4LRAHONIDGINWHA6VL3 \
  | 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: 092ea5755c5c40773503321b6383d55efd7b154907b503877c0081749075a114

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c236bc16dd3a728deab065afca09cc1aa3cd64a666a993668cc741fa968e2b8",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-04-11T10:26:31Z",
    "title_canon_sha256": "48d9a47d4aaa82bd45e0d7c54ee5d0fb541a8aeb1854367caa33ce62728bb5a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03912",
    "kind": "arxiv",
    "version": 1
  }
}