Pith Number

pith:2ZA4F26W

pith:2013:2ZA4F26WYVCIN5MUPZZMFAX74T

not attested not anchored not stored refs pending

The role of relativistic jets in the heaviest and most active supermassive black holes at high redshift

2) ((1) INAF, (2) Univ. Insubria (3) INFN, 3), (4) IAP, F. Haardt (2, G. Ghisellini (1), MI-Bicocca, Oss. di Brera, Paris), R. Della Ceca (1) M. Volonteri (4), T. Sbarrato (1

arxiv:1304.1152 v2 · 2013-04-03 · 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{2ZA4F26WYVCIN5MUPZZMFAX74T}

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	2026-05-18T01:50:43.386820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d641c2ebd6c54486f5947e72c282ffe4f38b6301957759118cba18dadbccf7b0

Aliases

arxiv: 1304.1152 · arxiv_version: 1304.1152v2 · doi: 10.48550/arxiv.1304.1152 · pith_short_12: 2ZA4F26WYVCI · pith_short_16: 2ZA4F26WYVCIN5MU · pith_short_8: 2ZA4F26W

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/2ZA4F26WYVCIN5MUPZZMFAX74T \
  | 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: d641c2ebd6c54486f5947e72c282ffe4f38b6301957759118cba18dadbccf7b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbb06f551fd67332c073effb7f0dd8342fc7ad24b41faa5f650ae44a1716a88f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-03T20:00:01Z",
    "title_canon_sha256": "ad7e424eca39603086bb97953a7ea6048ce2038df512894ccd7e71d2e9908319"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1152",
    "kind": "arxiv",
    "version": 2
  }
}