Pith Number

pith:UN73UOSV

pith:2010:UN73UOSVCA2AZJBOPMUFGXOHDT

not attested not anchored not stored refs pending

Probing the course of cosmic expansion with a combination of observational data

Hongwei Yu, Puxun Wu, Zhengxiang Li

arxiv:1011.2036 v1 · 2010-11-09 · gr-qc · 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{UN73UOSVCA2AZJBOPMUFGXOHDT}

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	2026-05-18T04:22:40.147695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a37fba3a5510340ca42e7b28535dc71cd917601d1ea2b159e06b1e25f2edce00

Aliases

arxiv: 1011.2036 · arxiv_version: 1011.2036v1 · doi: 10.48550/arxiv.1011.2036 · pith_short_12: UN73UOSVCA2A · pith_short_16: UN73UOSVCA2AZJBO · pith_short_8: UN73UOSV

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/UN73UOSVCA2AZJBOPMUFGXOHDT \
  | 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: a37fba3a5510340ca42e7b28535dc71cd917601d1ea2b159e06b1e25f2edce00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ca0a5ff851a913dde6ae8d1443de4d29843fa35d0ca68df79865adf20ce9e42",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-11-09T10:49:21Z",
    "title_canon_sha256": "5037e1b8a5ca980b7dddfc82faced2377bd981745f40ed530c11e2516c8e7614"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2036",
    "kind": "arxiv",
    "version": 1
  }
}