Pith Number

pith:NOQS4GT5

pith:2016:NOQS4GT56EY6ASV2QPPT3VDGTV

not attested not anchored not stored refs pending

Solar irradiance changes and phytoplankton productivity in Earth's ocean following astrophysical ionizing radiation events

Brian C. Thomas (Washburn Univ.), Patrick J. Neale (SERC)

arxiv:1604.01816 v1 · 2016-04-06 · astro-ph.EP · astro-ph.HE · physics.ao-ph · 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{NOQS4GT56EY6ASV2QPPT3VDGTV}

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	2026-05-18T01:17:32.034687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ba12e1a7df131e04aba83df3dd4669d614b234cddebff3e8ddc1de8d84b5b2c

Aliases

arxiv: 1604.01816 · arxiv_version: 1604.01816v1 · doi: 10.48550/arxiv.1604.01816 · pith_short_12: NOQS4GT56EY6 · pith_short_16: NOQS4GT56EY6ASV2 · pith_short_8: NOQS4GT5

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/NOQS4GT56EY6ASV2QPPT3VDGTV \
  | 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: 6ba12e1a7df131e04aba83df3dd4669d614b234cddebff3e8ddc1de8d84b5b2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c990e37569dfb42be8ffb89d351ef3f92d1f95cd3bab84382ddd9c3216b01f1",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "physics.ao-ph",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-04-06T21:38:19Z",
    "title_canon_sha256": "a28aac01c2573d527f5d84e0e9a72f7b5dbb067781f3e3493027bb88ed56a72f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01816",
    "kind": "arxiv",
    "version": 1
  }
}