Pith Number

pith:ILUA7D2A

pith:2021:ILUA7D2ABWLRLENAG3EZESASZR

not attested not anchored not stored refs pending

The CHIME Fast Radio Burst Population Does Not Track the Star Formation History of the Universe

Bing Zhang (UNLV), Rachel C. Zhang (Northwestern)

arxiv:2109.07558 v4 · 2021-09-15 · 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{ILUA7D2ABWLRLENAG3EZESASZR}

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	2026-07-05T03:49:42.292329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42e80f8f400d971591a036c9924812cc54c57cfd04450782b3de13a30605e9bd

Aliases

arxiv: 2109.07558 · arxiv_version: 2109.07558v4 · doi: 10.48550/arxiv.2109.07558 · pith_short_12: ILUA7D2ABWLR · pith_short_16: ILUA7D2ABWLRLENA · pith_short_8: ILUA7D2A

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/ILUA7D2ABWLRLENAG3EZESASZR \
  | 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: 42e80f8f400d971591a036c9924812cc54c57cfd04450782b3de13a30605e9bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "692b1c0b8fdf438733dba8b6ce5d5f126edee623c089b3262b607a4f37eb3dd6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-09-15T20:15:38Z",
    "title_canon_sha256": "0a6c2cf06f389a296f298bdd29ecd0f2b4779ce61281341d7cd97d48df818646"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.07558",
    "kind": "arxiv",
    "version": 4
  }
}