Pith Number

pith:USX47VLP

pith:2019:USX47VLPZDFKG5EVVIHGEIN6YO

not attested not anchored not stored refs pending

Phantom singularities and their quantum fate: general relativity and beyond

Claus Kiefer, Mariam Bouhmadi-L\'opez, Prado Mart\'in-Moruno

arxiv:1904.01836 v2 · 2019-04-03 · gr-qc · astro-ph.CO · 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{USX47VLPZDFKG5EVVIHGEIN6YO}

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

1 paper in Pith

Sign-Switching Dark Energy: Smooth Transitions with Recent DESI DR2 Observations

Receipt and verification

First computed	2026-07-05T00:13:29.514444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4afcfd56fc8caa37495aa0e6221bec393e63bc01576acee869571c1bbfd82e2

Aliases

arxiv: 1904.01836 · arxiv_version: 1904.01836v2 · doi: 10.48550/arxiv.1904.01836 · pith_short_12: USX47VLPZDFK · pith_short_16: USX47VLPZDFKG5EV · pith_short_8: USX47VLP

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/USX47VLPZDFKG5EVVIHGEIN6YO \
  | 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: a4afcfd56fc8caa37495aa0e6221bec393e63bc01576acee869571c1bbfd82e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad829e18219513c8c08e2232f08a82db2bea4a237e19f753d47315d82b01f842",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-04-03T08:22:16Z",
    "title_canon_sha256": "f347bf111728bfec2bf3a2379e00f262041e2cd3dcb0685ffe2e0f7bc522f1ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.01836",
    "kind": "arxiv",
    "version": 2
  }
}