Pith Number

pith:VPU7IGZK

pith:2018:VPU7IGZKYSFG3VMWPO3WXQAWQA

not attested not anchored not stored refs pending

Pulsating stars and eclipsing binaries as distances indicators in the universe

N. Nardetto

arxiv:1801.04158 v1 · 2018-01-12 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VPU7IGZKYSFG3VMWPO3WXQAWQA}

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	2026-05-18T00:26:09.636088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abe9f41b2ac48a6dd5967bb76bc016803363a5b5cba7184cb88dcb62646a70f3

Aliases

arxiv: 1801.04158 · arxiv_version: 1801.04158v1 · doi: 10.48550/arxiv.1801.04158 · pith_short_12: VPU7IGZKYSFG · pith_short_16: VPU7IGZKYSFG3VMW · pith_short_8: VPU7IGZK

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/VPU7IGZKYSFG3VMWPO3WXQAWQA \
  | 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: abe9f41b2ac48a6dd5967bb76bc016803363a5b5cba7184cb88dcb62646a70f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90e022d041639e3e31f1c3f4ea8802c8b05618332271a51ee5390d24af815c7b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-12T13:21:51Z",
    "title_canon_sha256": "d50acf4e3c7a4db7b61941a4c1650dcae7aca01ceb67c3ba77b9d323ac19d3f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04158",
    "kind": "arxiv",
    "version": 1
  }
}