Pith Number

pith:PXP4J4F3

pith:2021:PXP4J4F3UDDEUYC73GP5KEQVY2

not attested not anchored not stored refs pending

Atomic Transition Probabilities of Neutral Calcium

C. Sneden, E. A. Den Hartog, I. U. Roederer, J. E. Lawler, J. J. Cowan, J. Sobeck

arxiv:2105.10534 v1 · 2021-05-21 · 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{PXP4J4F3UDDEUYC73GP5KEQVY2}

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	2026-07-05T03:06:27.493636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ddfc4f0bba0c64a605fd99fd51215c6859297a85d23f47cfd7124ee21617081

Aliases

arxiv: 2105.10534 · arxiv_version: 2105.10534v1 · doi: 10.48550/arxiv.2105.10534 · pith_short_12: PXP4J4F3UDDE · pith_short_16: PXP4J4F3UDDEUYC7 · pith_short_8: PXP4J4F3

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/PXP4J4F3UDDEUYC73GP5KEQVY2 \
  | 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: 7ddfc4f0bba0c64a605fd99fd51215c6859297a85d23f47cfd7124ee21617081

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad9f1827d8a0864b0eab2460cc415c040a0bbb2d991a1658173123f50b97137e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-05-21T18:55:00Z",
    "title_canon_sha256": "be1879056fab0ac25a929ed303ea1c9b201e86d0f59f8e67352b6ff3691c0687"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.10534",
    "kind": "arxiv",
    "version": 1
  }
}