Pith Number

pith:BPBJUGZH

pith:2020:BPBJUGZHVKWTIVM7ZIB7NCEGG5

not attested not anchored not stored refs pending

Preliminary experimental results of determining the geopotential difference between two synchronized portable hydrogen clocks at different locations

Chenghui Cai, Kuangchao Wu, Wen-Bin Shen, Xiao Sun, Ziyu Shen

arxiv:2008.06271 v1 · 2020-08-14 · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BPBJUGZHVKWTIVM7ZIB7NCEGG5}

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	2026-07-05T01:27:07.589794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bc29a1b27aaad34559fca03f688863775e0c8e0724a5c098cf49fc042c12b20

Aliases

arxiv: 2008.06271 · arxiv_version: 2008.06271v1 · doi: 10.48550/arxiv.2008.06271 · pith_short_12: BPBJUGZHVKWT · pith_short_16: BPBJUGZHVKWTIVM7 · pith_short_8: BPBJUGZH

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/BPBJUGZHVKWTIVM7ZIB7NCEGG5 \
  | 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: 0bc29a1b27aaad34559fca03f688863775e0c8e0724a5c098cf49fc042c12b20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c8d062529c24ba0335f47cd2fa784d046cc031bfadddaf90ced263db0c03fee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2020-08-14T09:55:28Z",
    "title_canon_sha256": "bb085bb55220e0fa9f12ae99a07677fa784046b9c529ec8ae5808201468e40e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.06271",
    "kind": "arxiv",
    "version": 1
  }
}