Pith Number

pith:ZV7KJE7F

pith:1997:ZV7KJE7FT4SZCGNIA4MBCJG5YL

not attested not anchored not stored refs pending

HST, radio and infrared observations of 28 3CR radio galaxies at redshift z ~ 1: I. The observations

H. J. A. R"ottgering (Sterrewacht Leiden), M. S. Longair (Cambridge), P. N. Best (Sterrewacht Leiden)

arxiv:astro-ph/9707337 v1 · 1997-07-30 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZV7KJE7FT4SZCGNIA4MBCJG5YL}

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	2026-05-18T01:40:16.932641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd7ea493e59f259119a807181124ddc2ce958d16730cad23f15d53800b8aea1d

Aliases

arxiv: astro-ph/9707337 · arxiv_version: astro-ph/9707337v1 · doi: 10.48550/arxiv.astro-ph/9707337 · pith_short_12: ZV7KJE7FT4SZ · pith_short_16: ZV7KJE7FT4SZCGNI · pith_short_8: ZV7KJE7F

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/ZV7KJE7FT4SZCGNIA4MBCJG5YL \
  | 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: cd7ea493e59f259119a807181124ddc2ce958d16730cad23f15d53800b8aea1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ed9d7efe1c8cc5d05f05e42f539c610027a1737ef205da56e7d3fa5e2eecf9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-30T10:28:09Z",
    "title_canon_sha256": "06667df2afe72cc28b76713515d3b60eb2cf6c824a795f539fcc912f135e339a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707337",
    "kind": "arxiv",
    "version": 1
  }
}