Pith Number

pith:W74KD25O

pith:2015:W74KD25OLGSHHHTQLMBCURQHS3

not attested not anchored not stored refs pending

Solar irradiance changes and photobiological effects at Earth's surface following astrophysical ionizing radiation events

Brian C. Thomas (Washburn Univ.), Brock R. Snyder II (Washburn Univ.), Patrick J. Neale (SERC)

arxiv:1501.05914 v1 · 2015-01-23 · astro-ph.EP · astro-ph.HE · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W74KD25OLGSHHHTQLMBCURQHS3}

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	2026-05-18T02:20:28.328555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7f8a1ebae59a4739e705b022a460796e0d8b730d974e8352b4d8cec04828d66

Aliases

arxiv: 1501.05914 · arxiv_version: 1501.05914v1 · doi: 10.48550/arxiv.1501.05914 · pith_short_12: W74KD25OLGSH · pith_short_16: W74KD25OLGSHHHTQ · pith_short_8: W74KD25O

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/W74KD25OLGSHHHTQLMBCURQHS3 \
  | 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: b7f8a1ebae59a4739e705b022a460796e0d8b730d974e8352b4d8cec04828d66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b71de8f67f421ecf92ed6135d815b27b80dbddaee9b3490e1e9168458e85b031",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-01-23T19:03:51Z",
    "title_canon_sha256": "2af3d9aa4fc08674280387ea594d9e3e81890931456b2786ab2b470bc663ce9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05914",
    "kind": "arxiv",
    "version": 1
  }
}