Pith Number

pith:CZH6BHQ4

pith:1999:CZH6BHQ4SRERD6CO3VF6UZ2WZM

not attested not anchored not stored refs pending

Heavy nuclei at the end of the cosmic ray spectrum?

G. E. Romero, J. A. Combi, L. A. Anchordoqui

arxiv:astro-ph/9903145 v3 · 1999-03-10 · 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{CZH6BHQ4SRERD6CO3VF6UZ2WZM}

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	2026-07-04T17:18:21.982307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

164fe09e1c944911f84edd4bea6756cb152aca11972e7b8bff9f39af88f6b2d8

Aliases

arxiv: astro-ph/9903145 · arxiv_version: astro-ph/9903145v3 · doi: 10.48550/arxiv.astro-ph/9903145 · pith_short_12: CZH6BHQ4SRER · pith_short_16: CZH6BHQ4SRERD6CO · pith_short_8: CZH6BHQ4

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/CZH6BHQ4SRERD6CO3VF6UZ2WZM \
  | 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: 164fe09e1c944911f84edd4bea6756cb152aca11972e7b8bff9f39af88f6b2d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d15f0d08f55b866de107361e86c2170b334426f9b4ce957010e54689d0cc9385",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-10T11:53:15Z",
    "title_canon_sha256": "f08a52ece1b52f69dfce8699acb62969f2a79f74188beb5ceaae8a25a46a67c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903145",
    "kind": "arxiv",
    "version": 3
  }
}