Pith Number

pith:H2WJDPS2

pith:2009:H2WJDPS2U4H7XKWLHYPTE6JXGN

not attested not anchored not stored refs pending

Deep multi-frequency radio imaging in the Lockman Hole using the GMRT and VLA: II. The spectral index of submillimetre galaxies

A. Pope, Edinburgh), Edo Ibar (UK ATC, Ian Smail, J.S. Dunlop, K. Coppin, P.N. Best, R.J. Ivison

arxiv:0911.1954 v1 · 2009-11-10 · 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{H2WJDPS2U4H7XKWLHYPTE6JXGN}

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	2026-05-18T02:10:48.996577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eac91be5aa70ffbaacb3e1f3279373361ac8daa65900411f144ebbdf7ee3dfc

Aliases

arxiv: 0911.1954 · arxiv_version: 0911.1954v1 · doi: 10.48550/arxiv.0911.1954 · pith_short_12: H2WJDPS2U4H7 · pith_short_16: H2WJDPS2U4H7XKWL · pith_short_8: H2WJDPS2

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/H2WJDPS2U4H7XKWLHYPTE6JXGN \
  | 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: 3eac91be5aa70ffbaacb3e1f3279373361ac8daa65900411f144ebbdf7ee3dfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5aeb9dd101d3a1bc3508ac51a74036df39d1526b2512da54760b7c5533b97d6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-10T20:59:58Z",
    "title_canon_sha256": "e35a1ce7118dedf4a0b3f5519b4e132af729e142ce116bfc534f548d32a8ff2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1954",
    "kind": "arxiv",
    "version": 1
  }
}