Pith Number

pith:NBGM2OHI

pith:2013:NBGM2OHI6GY4PO3U3CKVCVNHOH

not attested not anchored not stored refs pending

The Highest Recorded Proton Spectrum at Earth since the Beginning of the Space Age

M. Boezio, M.S. Potgieter, N. De Simone, R. Du T. Strauss

arxiv:1308.1617 v1 · 2013-08-07 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NBGM2OHI6GY4PO3U3CKVCVNHOH}

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	2026-05-18T03:16:30.679458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

684ccd38e8f1b1c7bb74d8955155a771e3693ffae26523822a68586a6979d290

Aliases

arxiv: 1308.1617 · arxiv_version: 1308.1617v1 · doi: 10.48550/arxiv.1308.1617 · pith_short_12: NBGM2OHI6GY4 · pith_short_16: NBGM2OHI6GY4PO3U · pith_short_8: NBGM2OHI

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/NBGM2OHI6GY4PO3U3CKVCVNHOH \
  | 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: 684ccd38e8f1b1c7bb74d8955155a771e3693ffae26523822a68586a6979d290

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6149c96e8a23edbeba6f28073de1cd163cba070822b92eac7295a3f8baab96e",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-08-07T16:02:08Z",
    "title_canon_sha256": "1cd74c591f52aa9df9305a2b02deca5cd41187def4bf117cc51469f31bcbeb06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1617",
    "kind": "arxiv",
    "version": 1
  }
}