Pith Number

pith:P4PI4BJR

pith:1998:P4PI4BJRBXPJ5I3NUTUP2KNGDT

not attested not anchored not stored refs pending

A radio survey of merging clusters in the Shapley Concentration

D.Dallacasa, R.Morganti, R.W.Hunstead, S.Bardelli, T.Venturi

arxiv:astro-ph/9811016 v1 · 1998-11-02 · astro-ph

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

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	2026-05-18T01:07:36.933351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f1e8e05310dde9ea36da4e8fd29a61ce876cf94006222bee6d746063d14d0be

Aliases

arxiv: astro-ph/9811016 · arxiv_version: astro-ph/9811016v1 · doi: 10.48550/arxiv.astro-ph/9811016 · pith_short_12: P4PI4BJRBXPJ · pith_short_16: P4PI4BJRBXPJ5I3N · pith_short_8: P4PI4BJR

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/P4PI4BJRBXPJ5I3NUTUP2KNGDT \
  | 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: 7f1e8e05310dde9ea36da4e8fd29a61ce876cf94006222bee6d746063d14d0be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b542199d01ec78881acbf55c9e8ff1e4df7dc21be7d2942468e15c9f9b20093",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-11-02T13:27:56Z",
    "title_canon_sha256": "cc5269ba8cd1d556f54bb7bf715fb7de2478f0e7e6fd32765c8be17e0f8aeb75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9811016",
    "kind": "arxiv",
    "version": 1
  }
}