Pith Number

pith:7VO2MON6

pith:2017:7VO2MON6GVIQ4P4JQW7EABDFOH

not attested not anchored not stored refs pending

Near-Earth supernova activity during the past 35 Myr

Henrik Svensmark, Mads S{\o}rensen, Uffe Gr{\aa}e J{\o}rgensen

arxiv:1708.08248 v1 · 2017-08-28 · 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{7VO2MON6GVIQ4P4JQW7EABDFOH}

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	2026-05-18T00:36:36.580277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd5da639be35510e3f8985be40046571f05ac952640a56bedc906ae46c25b843

Aliases

arxiv: 1708.08248 · arxiv_version: 1708.08248v1 · doi: 10.48550/arxiv.1708.08248 · pith_short_12: 7VO2MON6GVIQ · pith_short_16: 7VO2MON6GVIQ4P4J · pith_short_8: 7VO2MON6

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/7VO2MON6GVIQ4P4JQW7EABDFOH \
  | 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: fd5da639be35510e3f8985be40046571f05ac952640a56bedc906ae46c25b843

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9cfab341d1aeaaa7f2de4a99568f3538bc8ffa166b9151b38f853c1cc5129f7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-08-28T09:35:28Z",
    "title_canon_sha256": "377c9934f9050ed0cf49c75dba0d427362927c9a40bda1c4613745ee94e7115a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.08248",
    "kind": "arxiv",
    "version": 1
  }
}