Pith Number

pith:Y4MO45XA

pith:2013:Y4MO45XAXUZIRABPMI5PFC5K6N

not attested not anchored not stored refs pending

PKS 1510-089: a rare example of a flat spectrum radio quasar with a very high-energy emission

Anna Barnacka, Bagmeet Behera, Pierre Brun, Rafal Moderski, Stefan Wagner

arxiv:1307.1779 v2 · 2013-07-06 · 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{Y4MO45XAXUZIRABPMI5PFC5K6N}

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	2026-05-18T02:43:36.941041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c718ee76e0bd3288802f623af28baaf360c0378bf226c08215e52265d3510fd6

Aliases

arxiv: 1307.1779 · arxiv_version: 1307.1779v2 · doi: 10.48550/arxiv.1307.1779 · pith_short_12: Y4MO45XAXUZI · pith_short_16: Y4MO45XAXUZIRABP · pith_short_8: Y4MO45XA

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/Y4MO45XAXUZIRABPMI5PFC5K6N \
  | 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: c718ee76e0bd3288802f623af28baaf360c0378bf226c08215e52265d3510fd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94e1b8f398cb43318b0c6d933346441fa61232f29b8d042a110b449bd2e72c60",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-07-06T13:16:42Z",
    "title_canon_sha256": "3a98b4da5f3016fe1436d2c2d263d55ae84dcee26606315c8e577fed1a0263a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1779",
    "kind": "arxiv",
    "version": 2
  }
}