Pith Number

pith:NFT4ZE7S

pith:1995:NFT4ZE7SSNWPNR3AXBHVJ32LHN

not attested not anchored not stored refs pending

The environments of z<0.3 QSOs

B.J. Boyle, R.J. Smith, S.J. Maddox

arxiv:astro-ph/9506093 v1 · 1995-06-16 · 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{NFT4ZE7SSNWPNR3AXBHVJ32LHN}

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	2026-05-18T01:40:23.159960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6967cc93f2936cf6c760b84f54ef4b3b769673ae955c4a8f873a154c69b0b9cc

Aliases

arxiv: astro-ph/9506093 · arxiv_version: astro-ph/9506093v1 · doi: 10.48550/arxiv.astro-ph/9506093 · pith_short_12: NFT4ZE7SSNWP · pith_short_16: NFT4ZE7SSNWPNR3A · pith_short_8: NFT4ZE7S

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/NFT4ZE7SSNWPNR3AXBHVJ32LHN \
  | 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: 6967cc93f2936cf6c760b84f54ef4b3b769673ae955c4a8f873a154c69b0b9cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29bfb200fcf2f0ed9dd422221fa5732ee89b1fffc76fb561a9680ed4d35fe5af",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-06-16T16:21:27Z",
    "title_canon_sha256": "8da8a62792a5c76c95c3d53a69628048663e2b21bb96cad2e24b887ebc8dea9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9506093",
    "kind": "arxiv",
    "version": 1
  }
}