Pith Number

pith:UCWDH7SB

pith:1999:UCWDH7SBM6QDNSJOP6I2G2XHUL

not attested not anchored not stored refs pending

A case devoid of bias: ORS voids vs. IRAS voids

2), (2) Hebrew University, 3, (3) Columbia University, 4) ((1) CfA, (4) NYU), Hagai El-Ad (1, Tsvi Piran (2

arxiv:astro-ph/9908004 v1 · 1999-07-31 · 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{UCWDH7SBM6QDNSJOP6I2G2XHUL}

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	2026-07-04T16:11:29.153978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0ac33fe4167a036c92e7f91a36ae7a2e875d61b2664d59fc7e423784f1e54c5

Aliases

arxiv: astro-ph/9908004 · arxiv_version: astro-ph/9908004v1 · doi: 10.48550/arxiv.astro-ph/9908004 · pith_short_12: UCWDH7SBM6QD · pith_short_16: UCWDH7SBM6QDNSJO · pith_short_8: UCWDH7SB

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/UCWDH7SBM6QDNSJOP6I2G2XHUL \
  | 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: a0ac33fe4167a036c92e7f91a36ae7a2e875d61b2664d59fc7e423784f1e54c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e765f509457bfe7732a0d353845429f17268ebfe2a6933371bf01fbcbb5bfc7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-31T17:19:49Z",
    "title_canon_sha256": "0203e6d22ae6d24e0f7e3ac0b0f46b78fbc2b4326ce81bdebef3c7d7e1c35604"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9908004",
    "kind": "arxiv",
    "version": 1
  }
}