Pith Number

pith:2NPOAZEZ

pith:2016:2NPOAZEZAYGHZDHZ6YEPKBD5TQ

not attested not anchored not stored refs pending

Fifty Years of Pulsar Candidate Selection: From simple filters to a new principled real-time classification approach

B. W. Stappers, J. D. Knowles, J. M. Brooke, R. J. Lyon, S. Cooper

arxiv:1603.05166 v1 · 2016-03-16 · astro-ph.IM · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2NPOAZEZAYGHZDHZ6YEPKBD5TQ}

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	2026-05-18T01:16:13.404977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d35ee06499060c7c8cf9f608f5047d9c3c4b30f32ec03671cc6f53da74eb71d9

Aliases

arxiv: 1603.05166 · arxiv_version: 1603.05166v1 · doi: 10.48550/arxiv.1603.05166 · pith_short_12: 2NPOAZEZAYGH · pith_short_16: 2NPOAZEZAYGHZDHZ · pith_short_8: 2NPOAZEZ

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/2NPOAZEZAYGHZDHZ6YEPKBD5TQ \
  | 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: d35ee06499060c7c8cf9f608f5047d9c3c4b30f32ec03671cc6f53da74eb71d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfd684c1d65b357ea62c04b49ac1c5ef93a6aa552c264b3d14a58d89d65cc16f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2016-03-16T16:24:59Z",
    "title_canon_sha256": "540352176f9591db4805030f8c0ce9d048b769f720f4d978975423af919a904c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.05166",
    "kind": "arxiv",
    "version": 1
  }
}