Pith Number

pith:SYDLDAD3

pith:1999:SYDLDAD3NIVXFYFJVCMZ7CJE24

not attested not anchored not stored refs pending

Are there static texture?

Lukas Lichtensteiger, Ruth Durrer

arxiv:astro-ph/9901024 v1 · 1999-01-04 · astro-ph · 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{SYDLDAD3NIVXFYFJVCMZ7CJE24}

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	2026-05-18T04:35:35.672714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9606b1807b6a2b72e0a9a8999f8924d7339cac93f6711492d999c658643d069c

Aliases

arxiv: astro-ph/9901024 · arxiv_version: astro-ph/9901024v1 · doi: 10.48550/arxiv.astro-ph/9901024 · pith_short_12: SYDLDAD3NIVX · pith_short_16: SYDLDAD3NIVXFYFJ · pith_short_8: SYDLDAD3

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/SYDLDAD3NIVXFYFJVCMZ7CJE24 \
  | 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: 9606b1807b6a2b72e0a9a8999f8924d7339cac93f6711492d999c658643d069c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44c4e88e876f5d38fcf9ed7ea45067713ed35eed523b3b2b07e68a073f3b223d",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-04T16:31:08Z",
    "title_canon_sha256": "ef8c6dabf7af9f61d4f8d01c2759763106bd9b0d81d5beafc41c0d64e72acc34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901024",
    "kind": "arxiv",
    "version": 1
  }
}