Pith Number

pith:JDX2R3BJ

pith:2012:JDX2R3BJWUNO5NIIZRVUACRQFW

not attested not anchored not stored refs pending

A new, precise measurement of the primordial abundance of Deuterium

2), 2) ((1) Institute of Astronomy, (2) Kavli Institute for Cosmology, Max Pettini (1, Ryan Cooke (1, University of Cambridge, University of Cambridge)

arxiv:1205.3785 v2 · 2012-05-16 · 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{JDX2R3BJWUNO5NIIZRVUACRQFW}

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	2026-05-18T01:57:31.195620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48efa8ec29b51aeeb508cc6b400a302dbc9c76ca8742d4a4dbe1cfba14d63032

Aliases

arxiv: 1205.3785 · arxiv_version: 1205.3785v2 · doi: 10.48550/arxiv.1205.3785 · pith_short_12: JDX2R3BJWUNO · pith_short_16: JDX2R3BJWUNO5NII · pith_short_8: JDX2R3BJ

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/JDX2R3BJWUNO5NIIZRVUACRQFW \
  | 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: 48efa8ec29b51aeeb508cc6b400a302dbc9c76ca8742d4a4dbe1cfba14d63032

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b21b1020d46854aa7a6e9dea4563caca35908c1f0b993e4a6e33f49d3bc79c40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-16T20:00:30Z",
    "title_canon_sha256": "87a29aa66c46229f8aa0c66495cdb3aa5e0566c73dc80f1706078b1ff6c636f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3785",
    "kind": "arxiv",
    "version": 2
  }
}