Pith Number

pith:EUCV5IDA

pith:2022:EUCV5IDAPVDJ26V3DKSTOGM2VQ

not attested not anchored not stored refs pending

Revisiting the Hubble constant, spatial curvature and cosmography with time-delay and cosmic chronometer observations

Chenfa Zheng, Shuo Cao, Sixuan Zhang, Tonghua Liu, Wuzheng Guo

arxiv:2204.07365 v2 · 2022-04-15 · 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{EUCV5IDAPVDJ26V3DKSTOGM2VQ}

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	2026-07-05T07:45:44.186889Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25055ea0607d469d7abb1aa537199aac1b0403da87c85121c9979ad80feb75a8

Aliases

arxiv: 2204.07365 · arxiv_version: 2204.07365v2 · doi: 10.48550/arxiv.2204.07365 · pith_short_12: EUCV5IDAPVDJ · pith_short_16: EUCV5IDAPVDJ26V3 · pith_short_8: EUCV5IDA

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/EUCV5IDAPVDJ26V3DKSTOGM2VQ \
  | 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: 25055ea0607d469d7abb1aa537199aac1b0403da87c85121c9979ad80feb75a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c78adb786ee4c57d7c8f6b3b0a220a6e95cf9e49f5aadab05999c2ae43debe1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-04-15T07:53:29Z",
    "title_canon_sha256": "eb56dd03639cc7a8e78b47ba042b639a6f77c7f19643e7fde6a3010f5ab4ec73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.07365",
    "kind": "arxiv",
    "version": 2
  }
}