Pith Number

pith:VSJBXUIE

pith:2011:VSJBXUIEUD5Q2PWCZLQQZAQ3OO

not attested not anchored not stored refs pending

Ultra Steep Spectrum radio sources in the Lockman Hole: SERVS identifications and redshift distribution at the faintest radio fluxes

Astrophysics of the University of Lisbon), C.A.C. Fernandes, Centre for Astronomy, C. Maraston, C. Simpson, D. Farrah, D. Rigopoulou, E. Gonz\'alez-Solares, E. Ibar, G. Zeimann, H. Messias, H. Rottgering, J. Afonso (Astronomical Observatory of Lisbon, J.-C. Mauduit, J. Dunlop, J. Pforr, J.-S. Huang, J. Surace, L. Bizzocchi, L. Marchetti, M. Grossi, M. J. Jarvis, M. Lacy, M. Vaccari, N. Seymour, P. Best, R. J. Ivison, R. P. Norris, S.A. Stanford, S. Chapman, S. Oliver

arxiv:1108.4037 v2 · 2011-08-19 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VSJBXUIEUD5Q2PWCZLQQZAQ3OO}

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	2026-05-18T02:00:50.321759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac921bd104a0fb0d3ec2cae10c821b73aa776849993367c7ce1c46dc04071990

Aliases

arxiv: 1108.4037 · arxiv_version: 1108.4037v2 · doi: 10.48550/arxiv.1108.4037 · pith_short_12: VSJBXUIEUD5Q · pith_short_16: VSJBXUIEUD5Q2PWC · pith_short_8: VSJBXUIE

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/VSJBXUIEUD5Q2PWCZLQQZAQ3OO \
  | 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: ac921bd104a0fb0d3ec2cae10c821b73aa776849993367c7ce1c46dc04071990

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf6683d4bd8577b1ad83a93bea04cc5f3a44484c36b396775abca4b18112d912",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-19T20:00:07Z",
    "title_canon_sha256": "282324ba00dafb9b3a017639d610739e7cb65c6a1c8ad363dc35348031977633"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4037",
    "kind": "arxiv",
    "version": 2
  }
}