Pith Number

pith:FS2FICBC

pith:2018:FS2FICBCBUHJWLDBDVWNGBJTDP

not attested not anchored not stored refs pending

Mode changing and giant pulses in the millisecond pulsar PSR B1957+20

Marten H. van Kerkwijk, Nikhil Mahajan, Robert Main, Ue-Li Pen

arxiv:1807.01713 v2 · 2018-07-04 · 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{FS2FICBCBUHJWLDBDVWNGBJTDP}

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	2026-05-18T00:01:58.796486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cb45408220d0e9b2c611d6cd305331bc26557666ffa98cd0808767884bd2044

Aliases

arxiv: 1807.01713 · arxiv_version: 1807.01713v2 · doi: 10.48550/arxiv.1807.01713 · pith_short_12: FS2FICBCBUHJ · pith_short_16: FS2FICBCBUHJWLDB · pith_short_8: FS2FICBC

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/FS2FICBCBUHJWLDBDVWNGBJTDP \
  | 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: 2cb45408220d0e9b2c611d6cd305331bc26557666ffa98cd0808767884bd2044

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7a8cf1bcebb7a45f387aa3f664f6741fb94c8c775dd7be45ff5c1d756f054fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-07-04T18:00:04Z",
    "title_canon_sha256": "ca3264414aa7ae1a67519b3e22f1d95a07a75484e54275fc78603a109c60f727"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01713",
    "kind": "arxiv",
    "version": 2
  }
}