Pith Number

pith:PD5GQDRM

pith:2021:PD5GQDRM5BUUFD6NIR2Y6EIG5O

not attested not anchored not stored refs pending

Toward a direct measurement of the cosmic acceleration: the first preparation with FAST

Chang-Zhi Lu, Kang Jiao, Ming Zhu, Tingting Zhang, Tong-Jie Zhang

arxiv:2111.10240 v5 · 2021-11-19 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PD5GQDRM5BUUFD6NIR2Y6EIG5O}

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	2026-07-05T05:56:12.796621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78fa680e2ce869428fcd44758f1106eb8dbf8024eb3dc85862bb965d2192858a

Aliases

arxiv: 2111.10240 · arxiv_version: 2111.10240v5 · doi: 10.48550/arxiv.2111.10240 · pith_short_12: PD5GQDRM5BUU · pith_short_16: PD5GQDRM5BUUFD6N · pith_short_8: PD5GQDRM

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/PD5GQDRM5BUUFD6NIR2Y6EIG5O \
  | 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: 78fa680e2ce869428fcd44758f1106eb8dbf8024eb3dc85862bb965d2192858a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93f23eb0749831a055537c23d34a751731fd9695cfb2a7e69514b110a574c112",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-11-19T14:22:51Z",
    "title_canon_sha256": "a74d4b25f0a142bd89c9942871fb4e22b9455aedeef716718baefa4e2f6f5169"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.10240",
    "kind": "arxiv",
    "version": 5
  }
}