Pith Number

pith:JIHBJA4F

pith:2019:JIHBJA4FJH3RRGJBR4TNVFAQ6U

not attested not anchored not stored refs pending

A new determination of the primordial helium abundance based on the HII region NGC 346

Antonio Peimbert, Mabel Valerdi

arxiv:1905.05102 v1 · 2019-05-13 · 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{JIHBJA4FJH3RRGJBR4TNVFAQ6U}

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	2026-05-17T23:46:22.538096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a0e14838549f71899218f26da9410f5206c0df712211e7e6a7f24a61c907623

Aliases

arxiv: 1905.05102 · arxiv_version: 1905.05102v1 · doi: 10.48550/arxiv.1905.05102 · pith_short_12: JIHBJA4FJH3R · pith_short_16: JIHBJA4FJH3RRGJB · pith_short_8: JIHBJA4F

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/JIHBJA4FJH3RRGJBR4TNVFAQ6U \
  | 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: 4a0e14838549f71899218f26da9410f5206c0df712211e7e6a7f24a61c907623

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df4a11d67764a0d83f2ee4c92785970a97c73f669102807097c380b21a890013",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-05-13T15:44:50Z",
    "title_canon_sha256": "b3f487d3e2e3e22849224e720e6e0c8658fbe3d81c4e9cb140c59c36ccdcf651"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.05102",
    "kind": "arxiv",
    "version": 1
  }
}