Pith Number

pith:MR4UAFPS

pith:1995:MR4UAFPSUDPVFA5A3APD2QCTZB

not attested not anchored not stored refs pending

The origin of cosmic rays

Peter L. Biermann

arxiv:astro-ph/9501006 v1 · 1995-01-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MR4UAFPSUDPVFA5A3APD2QCTZB}

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	2026-05-18T01:07:42.901577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64794015f2a0df5283a0d81e3d4053c855667334b958e5c9781e939fbb656c43

Aliases

arxiv: astro-ph/9501006 · arxiv_version: astro-ph/9501006v1 · doi: 10.48550/arxiv.astro-ph/9501006 · pith_short_12: MR4UAFPSUDPV · pith_short_16: MR4UAFPSUDPVFA5A · pith_short_8: MR4UAFPS

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/MR4UAFPSUDPVFA5A3APD2QCTZB \
  | 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: 64794015f2a0df5283a0d81e3d4053c855667334b958e5c9781e939fbb656c43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a65c8f500c8c58282ccf6813ac9ae5bc7de730ecc13dc22217082ddcb1d0c10",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-01-04T11:47:02Z",
    "title_canon_sha256": "550a40461e32039b52f285a7ad69076b7b4e5b15c79e9507d04ff714be885ec7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9501006",
    "kind": "arxiv",
    "version": 1
  }
}