Pith Number

pith:QWPA7FCU

pith:2019:QWPA7FCUHKC3HZQHP55BABTDFM

not attested not anchored not stored refs pending

Constraints on a Bianchi type I spacetime extension of the standard $\Lambda$CDM model

Luigi Tedesco, Ozgur Akarsu, Shivani Sharma, Suresh Kumar

arxiv:1905.06949 v2 · 2019-05-16 · astro-ph.CO · 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{QWPA7FCUHKC3HZQHP55BABTDFM}

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	2026-05-17T23:39:39.466780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

859e0f94543a85b3e6077f7a1006632b2a642e64623f83424dfaced392b5e05e

Aliases

arxiv: 1905.06949 · arxiv_version: 1905.06949v2 · doi: 10.48550/arxiv.1905.06949 · pith_short_12: QWPA7FCUHKC3 · pith_short_16: QWPA7FCUHKC3HZQH · pith_short_8: QWPA7FCU

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/QWPA7FCUHKC3HZQHP55BABTDFM \
  | 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: 859e0f94543a85b3e6077f7a1006632b2a642e64623f83424dfaced392b5e05e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e665795edab9c328e83a687f7fd33c04573bc039f8ae3aecc6f368f297d288ec",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-05-16T16:52:21Z",
    "title_canon_sha256": "97b0d8c394b4cb8fbdf1c31bfb3949131d2dac8a7db0657df8c812d16b2208ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06949",
    "kind": "arxiv",
    "version": 2
  }
}