Pith Number

pith:DQGKZ4HE

pith:2016:DQGKZ4HERJKMKLMGLA6IS45QCU

not attested not anchored not stored refs pending

The Lockman Hole project: LOFAR observations and spectral index properties of low-frequency radio sources

C. Tasse, E. K. Mahony, E. Retana-Montenegro, F. De Gasperin, G. Calistro Rivera, G. Heald, G. J. White, G. K. Miley, H. J. A. R\"ottgering, I. M. van Bemmel, I. Prandoni, J. J. Harwood, J. Sabater, M. Brienza, M. Br\"uggen, M. J. Hardcastle, M. J. Jarvis, P. N. Best, R. J. van Weeren, R. Morganti, S. Mandal, S. van Velzen, T. W. Shimwell, W. L. Williams

arxiv:1609.00537 v1 · 2016-09-02 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQGKZ4HERJKMKLMGLA6IS45QCU}

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	2026-05-18T01:04:17.501395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c0cacf0e48a54c52d86583c8973b015058e5da778c51b3ddf87904ea9d315e3

Aliases

arxiv: 1609.00537 · arxiv_version: 1609.00537v1 · doi: 10.48550/arxiv.1609.00537 · pith_short_12: DQGKZ4HERJKM · pith_short_16: DQGKZ4HERJKMKLMG · pith_short_8: DQGKZ4HE

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/DQGKZ4HERJKMKLMGLA6IS45QCU \
  | 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: 1c0cacf0e48a54c52d86583c8973b015058e5da778c51b3ddf87904ea9d315e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f15a6d5ee9502bb6abf77d3e0bc3e6cc4017a39e746dcc14f38da76e99c05b3",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-02T10:30:20Z",
    "title_canon_sha256": "90c6ec05fee93a497b12ebf541ebd475c08c345c2045eee7573da240bff360aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.00537",
    "kind": "arxiv",
    "version": 1
  }
}