Pith Number

pith:SO524OTM

pith:2009:SO524OTM2755AI6NBD4ZTW34RO

not attested not anchored not stored refs pending

Ionospheric Calibration of Low Frequency Radio Interferometric Observations using the Peeling Scheme: I. Method Description and First Results

A.S. Cohen, H.J.A. Rottgering, H.T. Intema, I.M. van Bemmel, S. van der Tol, W.D. Cotton

arxiv:0904.3975 v2 · 2009-04-25 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SO524OTM2755AI6NBD4ZTW34RO}

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	2026-05-18T02:13:57.404843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93bbae3a6cd7fbd023cd08f999db7c8bbe4f2dfb59f3da77213ddf8b590a56a6

Aliases

arxiv: 0904.3975 · arxiv_version: 0904.3975v2 · doi: 10.48550/arxiv.0904.3975 · pith_short_12: SO524OTM2755 · pith_short_16: SO524OTM2755AI6N · pith_short_8: SO524OTM

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/SO524OTM2755AI6NBD4ZTW34RO \
  | 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: 93bbae3a6cd7fbd023cd08f999db7c8bbe4f2dfb59f3da77213ddf8b590a56a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25f324524bbd361af9d4e0c1debb3c3717774f7cdf4e105325475b785d2c72c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-04-25T10:58:35Z",
    "title_canon_sha256": "ad4ff523d5125c8e5242cb17e18993de0188d45798b06908f3a3d0a479ba1709"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3975",
    "kind": "arxiv",
    "version": 2
  }
}