Pith Number

pith:77QCLK7U

pith:2010:77QCLK7UOK23MEL5A42DOKXTGZ

not attested not anchored not stored refs pending

Precise Measurement of Gravity Variations During a Total Solar Eclipse

Chang-chai Hua, Chuan-zhen Wu, Hong-chen Liu, Hong-gang Guo, Qian-shen Wang, Xin-She Yang

arxiv:1003.4947 v1 · 2010-03-25 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{77QCLK7UOK23MEL5A42DOKXTGZ}

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	2026-05-18T02:24:26.683150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffe025abf472b5b6117d0734372af3367e468f266b8f992f078d8b4bdff3fdbd

Aliases

arxiv: 1003.4947 · arxiv_version: 1003.4947v1 · doi: 10.48550/arxiv.1003.4947 · pith_short_12: 77QCLK7UOK23 · pith_short_16: 77QCLK7UOK23MEL5 · pith_short_8: 77QCLK7U

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/77QCLK7UOK23MEL5A42DOKXTGZ \
  | 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: ffe025abf472b5b6117d0734372af3367e468f266b8f992f078d8b4bdff3fdbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8348b9dcd02b6aacda039c1b83e3b77c28f365201e3e43f1ead887d1b66a100",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2010-03-25T16:21:28Z",
    "title_canon_sha256": "9d36a870b2f163b09b652979211af126a7e8a549e03f59675e7b4517d0649b65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.4947",
    "kind": "arxiv",
    "version": 1
  }
}