Pith Number

pith:3XFU55IY

pith:2014:3XFU55IY34YECCVNMJCLXS43GG

not attested not anchored not stored refs pending

Cosmic reionization by primordial cosmic rays

Gustavo Esteban Romero, Maria Victoria del Valle, Matias Tueros

arxiv:1409.6225 v1 · 2014-09-22 · astro-ph.CO · 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{3XFU55IY34YECCVNMJCLXS43GG}

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	2026-05-18T02:40:09.843471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddcb4ef518df30410aad6244bbcb9b319f1c83d78cb51f3c870a87ad6b86255e

Aliases

arxiv: 1409.6225 · arxiv_version: 1409.6225v1 · doi: 10.48550/arxiv.1409.6225 · pith_short_12: 3XFU55IY34YE · pith_short_16: 3XFU55IY34YECCVN · pith_short_8: 3XFU55IY

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/3XFU55IY34YECCVNMJCLXS43GG \
  | 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: ddcb4ef518df30410aad6244bbcb9b319f1c83d78cb51f3c870a87ad6b86255e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daaf665b504df6fa6f58c1d2c5814ea4a547a93f2f35f89a1756fa099d9bcb1f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-09-22T16:05:54Z",
    "title_canon_sha256": "fe0772db22b5d3ffe284989cfb781b29f41220da1cb29b3fffcfcc20657f5723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.6225",
    "kind": "arxiv",
    "version": 1
  }
}