Pith Number

pith:HBJ2K6I5

pith:1994:HBJ2K6I5VLR542VUKS6NESLKXS

not attested not anchored not stored refs pending

Quasar-galaxy associations

M.J. Drinkwater, P.A. Thomas, R.L. Webster

arxiv:astro-ph/9408088 v1 · 1994-08-29 · 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{HBJ2K6I5VLR542VUKS6NESLKXS}

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	2026-05-18T01:40:24.353714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3853a5791daae3de6ab454bcd2496abc87cd7bc99191fefc368ee9a0988dadde

Aliases

arxiv: astro-ph/9408088 · arxiv_version: astro-ph/9408088v1 · doi: 10.48550/arxiv.astro-ph/9408088 · pith_short_12: HBJ2K6I5VLR5 · pith_short_16: HBJ2K6I5VLR542VU · pith_short_8: HBJ2K6I5

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/HBJ2K6I5VLR542VUKS6NESLKXS \
  | 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: 3853a5791daae3de6ab454bcd2496abc87cd7bc99191fefc368ee9a0988dadde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddef4a174ab5d9250fd1077995e0be72e228ed6fb33705ae49cc4dd4350d9986",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-08-29T00:46:19Z",
    "title_canon_sha256": "cba1edaac1c58ab97ec7a9fdcbda8519c61e4ce88df717c018be687915f8a33a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9408088",
    "kind": "arxiv",
    "version": 1
  }
}