Pith Number

pith:IYHOORLK

pith:2011:IYHOORLK2LP2AQJN4HBXYY52YC

not attested not anchored not stored refs pending

Evidence for an axion-like particle from blazar spectra?

Alessandro de Angelis, Giorgio Galanti, Marco Roncadelli, Massimo Persic

arxiv:1102.1177 v1 · 2011-02-06 · astro-ph.HE · astro-ph.CO · hep-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{IYHOORLK2LP2AQJN4HBXYY52YC}

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	2026-05-18T04:29:54.841640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

460ee7456ad2dfa0412de1c37c63bac0aeecf37192fc8a0e5a998dc45bcbac89

Aliases

arxiv: 1102.1177 · arxiv_version: 1102.1177v1 · doi: 10.48550/arxiv.1102.1177 · pith_short_12: IYHOORLK2LP2 · pith_short_16: IYHOORLK2LP2AQJN · pith_short_8: IYHOORLK

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/IYHOORLK2LP2AQJN4HBXYY52YC \
  | 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: 460ee7456ad2dfa0412de1c37c63bac0aeecf37192fc8a0e5a998dc45bcbac89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "177072d104709886b587b9775772f4f6655656b48af6f3f414e486682020650b",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-02-06T17:29:55Z",
    "title_canon_sha256": "b1a9a7e715d1633278f6fbe6d69aaf64727a7fe4244a88282d1eb2e17cc44963"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1177",
    "kind": "arxiv",
    "version": 1
  }
}