Pith Number

pith:VQQCQ2RL

pith:2018:VQQCQ2RLSLP3VVYBWQKRVUWCM6

not attested not anchored not stored refs pending

The NuSTAR Extragalactic Surveys: X-ray spectroscopic analysis of the bright hard-band selected sample

A. Comastri, A. Del Moro, A. Goulding, A. Masini, C. Ricci, C.-T. J. Chen, D. Farrah, D. M. Alexander, D. R. Ballantyne, D. Stern, E. Treister, F. A. Harrison, F. Civano, F. E. Bauer, F. Fiore, G. B. Lansbury, G. Lanzuisi, J. Aird, J. R. Mullaney, L. Lanz, L. Zappacosta, M. Ajello, P. Gandhi, S. Marchesi, S. Puccetti, W. N. Brandt

arxiv:1801.04280 v1 · 2018-01-12 · 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{VQQCQ2RLSLP3VVYBWQKRVUWCM6}

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	2026-05-18T00:22:56.697238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac20286a2b92dfbad701b4151ad2c2679fd3887ab4d25464f6ad04f087f706df

Aliases

arxiv: 1801.04280 · arxiv_version: 1801.04280v1 · doi: 10.48550/arxiv.1801.04280 · pith_short_12: VQQCQ2RLSLP3 · pith_short_16: VQQCQ2RLSLP3VVYB · pith_short_8: VQQCQ2RL

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/VQQCQ2RLSLP3VVYBWQKRVUWCM6 \
  | 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: ac20286a2b92dfbad701b4151ad2c2679fd3887ab4d25464f6ad04f087f706df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e77db858d4a7957282ad0f78eb04dc471138407073a833023f232b5b56f38ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-01-12T19:00:05Z",
    "title_canon_sha256": "0049f138f0baab8842d397276e43e6a7fa139d38f42634ce2c450e5fbad1aac2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04280",
    "kind": "arxiv",
    "version": 1
  }
}