Pith. sign in
Pith Number

pith:JS46ZR5E

pith:2008:JS46ZR5EEAJNXEMSU7RV66PDM3
not attested not anchored not stored refs pending

Signature change events: A challenge for quantum gravity?

Angela White (Newcastle upon Tyne), Matt Visser (Victoria University of Wellington), Silke Weinfurtner (UBC Vancouver)

arxiv:0812.3744 v3 · 2008-12-19 · gr-qc

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{JS46ZR5EEAJNXEMSU7RV66PDM3}

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

Receipt and verification
First computed 2026-07-04T17:26:23.688391Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

4cb9ecc7a42012db9192a7e35f79e366ca9f6d9a51f63b9e44cb3d370c801920

Aliases

arxiv: 0812.3744 · arxiv_version: 0812.3744v3 · doi: 10.48550/arxiv.0812.3744 · pith_short_12: JS46ZR5EEAJN · pith_short_16: JS46ZR5EEAJNXEMS · pith_short_8: JS46ZR5E
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/JS46ZR5EEAJNXEMSU7RV66PDM3 \
  | 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: 4cb9ecc7a42012db9192a7e35f79e366ca9f6d9a51f63b9e44cb3d370c801920
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "89a47a0173c631028721906db728e61705bc2fc36fa83e43e5d38092f62fb4ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-12-19T18:12:47Z",
    "title_canon_sha256": "b017f8ccaa47b94133550577f8696c7882a441f095b6b843685011a5e4671e7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.3744",
    "kind": "arxiv",
    "version": 3
  }
}