Pith Number

pith:RH4VL33S

pith:2009:RH4VL33SIFJ2YGYWEYZPGEZP6L

not attested not anchored not stored refs pending

The discovery of diffuse steep spectrum sources in Abell 2256

H. J. A. Rottgering, H. T. Intema, J. B. R. Oonk, R. J. van Weeren, T. E. Clarke

arxiv:0910.4967 v1 · 2009-10-26 · 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{RH4VL33SIFJ2YGYWEYZPGEZP6L}

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	2026-05-18T02:11:11.242374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89f955ef724153ac1b162632f3132ff2fac6ef83b8951d3edabaa9d7eaa3df49

Aliases

arxiv: 0910.4967 · arxiv_version: 0910.4967v1 · doi: 10.48550/arxiv.0910.4967 · pith_short_12: RH4VL33SIFJ2 · pith_short_16: RH4VL33SIFJ2YGYW · pith_short_8: RH4VL33S

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/RH4VL33SIFJ2YGYWEYZPGEZP6L \
  | 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: 89f955ef724153ac1b162632f3132ff2fac6ef83b8951d3edabaa9d7eaa3df49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a733bd3e0778d43813f27f2ca1ca1e9c86f0e1203be6ac00167f9026bdad7184",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-26T20:07:20Z",
    "title_canon_sha256": "ce65147dbfa1d28752bb89b313238878ee2d856d0fa32b44e25b60f6a0746054"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4967",
    "kind": "arxiv",
    "version": 1
  }
}