Pith Number

pith:HTMTQBIP

pith:2003:HTMTQBIPVVYHGGIMU5HOW2W4KK

not attested not anchored not stored refs pending

Ultra High Energy Cosmic Rays: the present position and the need for mass composition measurements

A. A. Watson

arxiv:astro-ph/0312475 v1 · 2003-12-18 · 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{HTMTQBIPVVYHGGIMU5HOW2W4KK}

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	2026-05-18T00:37:00.684987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cd938050fad7073190ca74eeb6adc5289f91278ed4ad86192eb694f5affe943

Aliases

arxiv: astro-ph/0312475 · arxiv_version: astro-ph/0312475v1 · doi: 10.48550/arxiv.astro-ph/0312475 · pith_short_12: HTMTQBIPVVYH · pith_short_16: HTMTQBIPVVYHGGIM · pith_short_8: HTMTQBIP

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/HTMTQBIPVVYHGGIMU5HOW2W4KK \
  | 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: 3cd938050fad7073190ca74eeb6adc5289f91278ed4ad86192eb694f5affe943

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5799fc3f61f4508774a4dbd0979157bab4afbc9a86f5515a5e1973132d8e4f43",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-12-18T10:39:41Z",
    "title_canon_sha256": "c8f25524942650a8d07731bd397a1e94bc0bbd25965c266318bbc823269c94e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0312475",
    "kind": "arxiv",
    "version": 1
  }
}