Pith Number

pith:Q4QVDJDB

pith:2012:Q4QVDJDBF4MP3PLQTIT23BC2O7

not attested not anchored not stored refs pending

Bound states of spin-half particles in a static gravitational field close to the black hole field

A. F. Spencer-Smith, G. H. Gossel, J. C. Berengut, V. V. Flambaum

arxiv:1208.4223 v2 · 2012-08-21 · 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{Q4QVDJDBF4MP3PLQTIT23BC2O7}

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	2026-05-18T03:31:44.821849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

872151a4612f18fdbd709a27ad845a77e85aaea5b635f497a55df43b8f8b9c58

Aliases

arxiv: 1208.4223 · arxiv_version: 1208.4223v2 · doi: 10.48550/arxiv.1208.4223 · pith_short_12: Q4QVDJDBF4MP · pith_short_16: Q4QVDJDBF4MP3PLQ · pith_short_8: Q4QVDJDB

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/Q4QVDJDBF4MP3PLQTIT23BC2O7 \
  | 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: 872151a4612f18fdbd709a27ad845a77e85aaea5b635f497a55df43b8f8b9c58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdd0ac1599e8ba4ac37e49a96ceac372da69a5e8bcb564f15142001e9c0f7af5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-08-21T09:26:26Z",
    "title_canon_sha256": "de3b6b3e458ebb6207f5ecbb375d6daec16f9f8e9ddf0d4adcef9e533c04021a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4223",
    "kind": "arxiv",
    "version": 2
  }
}