Pith Number

pith:OB25PFVR

pith:2013:OB25PFVRGLQI4V2YMUCJNF3GYG

not attested not anchored not stored refs pending

Extreme TeV Blazars and Lower Limits on Intergalactic Magnetic Fields

Timothy C. Arlen, Vladimir V. Vassiliev

arxiv:1303.2121 v1 · 2013-03-08 · 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{OB25PFVRGLQI4V2YMUCJNF3GYG}

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	2026-05-18T03:31:20.015575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7075d796b132e08e57586504969766c193524582a529482ce9fe986270d417d9

Aliases

arxiv: 1303.2121 · arxiv_version: 1303.2121v1 · doi: 10.48550/arxiv.1303.2121 · pith_short_12: OB25PFVRGLQI · pith_short_16: OB25PFVRGLQI4V2Y · pith_short_8: OB25PFVR

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/OB25PFVRGLQI4V2YMUCJNF3GYG \
  | 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: 7075d796b132e08e57586504969766c193524582a529482ce9fe986270d417d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "731c332b2b48cd8723c2487d07a919354585d71b2784e606fc618f5b71be9a0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-03-08T21:04:16Z",
    "title_canon_sha256": "63d0e4f8dfc8ced30e4299555e9f6b76ff197541040c604622832c63eb7ec3ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.2121",
    "kind": "arxiv",
    "version": 1
  }
}