Pith Number

pith:34UZBYRP

pith:2013:34UZBYRP26OW3TA7SIPRCJVRGX

not attested not anchored not stored refs pending

Dispersion measure variations in a sample of 168 pulsars

E. Petroff, M. J. Keith, R. M. Shannon, S. Johnston, W. van Straten

arxiv:1307.7221 v1 · 2013-07-27 · astro-ph.GA · 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{34UZBYRP26OW3TA7SIPRCJVRGX}

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	2026-05-18T01:48:33.834243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df2990e22fd79d6dcc1f921f1126b135c1bb479ef17dd522472af16bb66aac8e

Aliases

arxiv: 1307.7221 · arxiv_version: 1307.7221v1 · doi: 10.48550/arxiv.1307.7221 · pith_short_12: 34UZBYRP26OW · pith_short_16: 34UZBYRP26OW3TA7 · pith_short_8: 34UZBYRP

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/34UZBYRP26OW3TA7SIPRCJVRGX \
  | 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: df2990e22fd79d6dcc1f921f1126b135c1bb479ef17dd522472af16bb66aac8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0ee7d2ea0fea0bf2ef2226cb5206f2c08acc99b2055bc1d9e503346bc7077dd",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-07-27T07:04:14Z",
    "title_canon_sha256": "0c36af2bdbc78554fbec9ff2df8230eb9d97642cb0b53730ec7571d31ce162e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7221",
    "kind": "arxiv",
    "version": 1
  }
}