Pith Number

pith:5LFA4I72

pith:2025:5LFA4I72S4SKI7ALI6TQFZ7XCM

not attested not anchored not stored refs pending

Scalar fields from nonlinear sigma models on black hole spacetimes

Llibert Arest\'e Sal\'o, Ludovico Machet

arxiv:2508.18362 v1 · 2025-08-25 · gr-qc · astro-ph.HE · 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{5LFA4I72S4SKI7ALI6TQFZ7XCM}

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	2026-07-05T11:59:22.878859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eaca0e23fa9724a47c0b47a702e7f7130e57989b1fbebd8609389898cf5bf22b

Aliases

arxiv: 2508.18362 · arxiv_version: 2508.18362v1 · doi: 10.48550/arxiv.2508.18362 · pith_short_12: 5LFA4I72S4SK · pith_short_16: 5LFA4I72S4SKI7AL · pith_short_8: 5LFA4I72

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/5LFA4I72S4SKI7ALI6TQFZ7XCM \
  | 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: eaca0e23fa9724a47c0b47a702e7f7130e57989b1fbebd8609389898cf5bf22b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c45d1468a66d453f611b4508f1af3650418e674259284030f257bb9c294557a6",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-08-25T18:00:07Z",
    "title_canon_sha256": "a910a971c1a5633bdf27f71d3849b75d70111e3247f81d8cec41eab1ee3fb37c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.18362",
    "kind": "arxiv",
    "version": 1
  }
}