Pith Number

pith:7YXUYGT4

pith:2013:7YXUYGT4HHOB2TRCFQFY7QUILM

not attested not anchored not stored refs pending

The primordial helium abundance from updated emissivities

Erik Aver, Evan D. Skillman, Keith A. Olive, R. L. Porter

arxiv:1309.0047 v1 · 2013-08-30 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7YXUYGT4HHOB2TRCFQFY7QUILM}

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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.

Cited by

2 papers in Pith

Millicharged Particle Constraints from Asymptotic Giant Branch Stars

Fifty years of primordial helium abundances: A statistical reanalysis

Receipt and verification

First computed	2026-05-18T01:47:51.074535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe2f4c1a7c39dc1d4e222c0b8fc2885b37fce79de82d308ab2a723b350005e12

Aliases

arxiv: 1309.0047 · arxiv_version: 1309.0047v1 · doi: 10.48550/arxiv.1309.0047 · pith_short_12: 7YXUYGT4HHOB · pith_short_16: 7YXUYGT4HHOB2TRC · pith_short_8: 7YXUYGT4

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/7YXUYGT4HHOB2TRCFQFY7QUILM \
  | 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: fe2f4c1a7c39dc1d4e222c0b8fc2885b37fce79de82d308ab2a723b350005e12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "034999c301bb8cb2ff10ab16a6cb5a99a5b0e1e99f01b67680aef19cb5f52d62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-30T23:24:46Z",
    "title_canon_sha256": "d4219b89cc3353ab20216cbb9340f59b3c6e063e5e99e5249a16e5a06f6facdb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0047",
    "kind": "arxiv",
    "version": 1
  }
}