Pith Number

pith:XMSFENVO

pith:2009:XMSFENVOVAEAM6NT7K3VY4IVU5

not attested not anchored not stored refs pending

Reexamination of helium fine structure

K. Pachucki, V.A. Yerokhin

arxiv:0905.3046 v1 · 2009-05-19 · physics.atom-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XMSFENVOVAEAM6NT7K3VY4IVU5}

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	2026-05-18T02:13:38.719104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb245236aea8080679b3fab75c7115a765b75ee7fec1234f48c821580eefd426

Aliases

arxiv: 0905.3046 · arxiv_version: 0905.3046v1 · doi: 10.48550/arxiv.0905.3046 · pith_short_12: XMSFENVOVAEA · pith_short_16: XMSFENVOVAEAM6NT · pith_short_8: XMSFENVO

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/XMSFENVOVAEAM6NT7K3VY4IVU5 \
  | 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: bb245236aea8080679b3fab75c7115a765b75ee7fec1234f48c821580eefd426

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27de254e7e348d0e56f1fe16a5db4dc683aebc3e85f27000bda3d915bf3bdd12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2009-05-19T09:01:34Z",
    "title_canon_sha256": "6ca54ad1a4ec9a1c6a4fd03f7390879a99ab82ac8865d03ac2d3c8718d79ed5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3046",
    "kind": "arxiv",
    "version": 1
  }
}