Pith Number

pith:W2Q6FOA6

pith:2014:W2Q6FOA6LOHF56DZ4IDSAM6A6I

not attested not anchored not stored refs pending

Constraints on Cosmological Models from Hubble Parameters Measurements

Hong Li, Jun-Qing Xia, Mingzhe Li, Si-Yu Li, Wei Zheng, You-Ping Wan

arxiv:1403.2571 v1 · 2014-03-11 · 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{W2Q6FOA6LOHF56DZ4IDSAM6A6I}

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	2026-05-18T02:55:20.261635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a1e2b81e5b8e5ef879e2072033c0f22b4059946b0b16b9886e432e22d37aba

Aliases

arxiv: 1403.2571 · arxiv_version: 1403.2571v1 · doi: 10.48550/arxiv.1403.2571 · pith_short_12: W2Q6FOA6LOHF · pith_short_16: W2Q6FOA6LOHF56DZ · pith_short_8: W2Q6FOA6

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/W2Q6FOA6LOHF56DZ4IDSAM6A6I \
  | 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: b6a1e2b81e5b8e5ef879e2072033c0f22b4059946b0b16b9886e432e22d37aba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b27d7efac13b42520c623c9e871942386c6a59fc5f90e1443d483020cca0bfc4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-03-11T13:30:46Z",
    "title_canon_sha256": "c192a4f49b81af34dc04fd39fdf0eb5b66f26e3f4b71ead2d6abc05568536a64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2571",
    "kind": "arxiv",
    "version": 1
  }
}