Pith Number

pith:GEN3E5SR

pith:1998:GEN3E5SR42SJ6RBSLF4AVPTIKC

not attested not anchored not stored refs pending

Four New BL Lac Surveys: Sampling New Populations

E. D. Feigelson, G. D. Schmidt, J. Siebert, P. S. Smith, R. H. Becker, R. I. Kollgaard, S. A. Laurent-Muehleisen, W. Brinkmann

arxiv:astro-ph/9810243 v1 · 1998-10-15 · 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{GEN3E5SR42SJ6RBSLF4AVPTIKC}

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	2026-07-04T14:16:07.051215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

311bb27651e6a49f443259780abe685089c3cd64ddfee7cb5b1b18debb339b9e

Aliases

arxiv: astro-ph/9810243 · arxiv_version: astro-ph/9810243v1 · doi: 10.48550/arxiv.astro-ph/9810243 · pith_short_12: GEN3E5SR42SJ · pith_short_16: GEN3E5SR42SJ6RBS · pith_short_8: GEN3E5SR

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/GEN3E5SR42SJ6RBSLF4AVPTIKC \
  | 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: 311bb27651e6a49f443259780abe685089c3cd64ddfee7cb5b1b18debb339b9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4416aa688af437166d97ed46ec545d801eef25b40c2ede50a67782a06eb8c004",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-15T17:08:50Z",
    "title_canon_sha256": "72684eb6b6afde6ad7ed7ee61c7598bbcaf999243e99d6ba016cc4dfdc077fbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810243",
    "kind": "arxiv",
    "version": 1
  }
}