Pith Number

pith:7PWTJJXC

pith:2018:7PWTJJXC3YLPT4YRHLMP4KDSAG

not attested not anchored not stored refs pending

On the Impact of Helium Content on the RR Lyrae Distance Scale

A. Pietrinferni, G. Bono, M. Castellani, M. Marconi, R.F. Stellingwerf, V.F. Braga

arxiv:1808.07348 v1 · 2018-08-22 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7PWTJJXC3YLPT4YRHLMP4KDSAG}

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	2026-05-18T00:06:36.893898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbed34a6e2de16f9f3113ad8fe287201b7770dd5f204017cfc77a83ffb9f0fbe

Aliases

arxiv: 1808.07348 · arxiv_version: 1808.07348v1 · doi: 10.48550/arxiv.1808.07348 · pith_short_12: 7PWTJJXC3YLP · pith_short_16: 7PWTJJXC3YLPT4YR · pith_short_8: 7PWTJJXC

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/7PWTJJXC3YLPT4YRHLMP4KDSAG \
  | 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: fbed34a6e2de16f9f3113ad8fe287201b7770dd5f204017cfc77a83ffb9f0fbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cd83fb9506ea49833766c64f1aad14465d00509e036e808de089c9bddec056c",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-08-22T13:28:41Z",
    "title_canon_sha256": "1ed947c95f2e5bd7957a06815ebd173e19a0bddb0dde625edd83f9954706b8e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07348",
    "kind": "arxiv",
    "version": 1
  }
}