Pith Number

pith:EGEOM5BY

pith:2015:EGEOM5BYYRPOXCKIHQTR4DXUXQ

not attested not anchored not stored refs pending

Two-photon assisted clock comparison to picosecond precision

Jia-Zheng Song, Ren-Gang Wan, Shi-Wei Zhang, Tong-Yi Zhang, Yin-Ping Yao

arxiv:1509.08556 v1 · 2015-09-29 · physics.optics · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EGEOM5BYYRPOXCKIHQTR4DXUXQ}

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	2026-05-18T01:31:52.321274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2188e67438c45eeb89483c271e0ef4bc1803d04cea6b0668a8beccf74c7c1d89

Aliases

arxiv: 1509.08556 · arxiv_version: 1509.08556v1 · doi: 10.48550/arxiv.1509.08556 · pith_short_12: EGEOM5BYYRPO · pith_short_16: EGEOM5BYYRPOXCKI · pith_short_8: EGEOM5BY

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/EGEOM5BYYRPOXCKIHQTR4DXUXQ \
  | 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: 2188e67438c45eeb89483c271e0ef4bc1803d04cea6b0668a8beccf74c7c1d89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed5dfa75691e1422e099a43c327b1785e12d8096b96a17976c9830c2743ac540",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-09-29T01:43:51Z",
    "title_canon_sha256": "9d226a5c91af873fa01c395b9c960e43baba3776724d43a50cecd1125c7dbf7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08556",
    "kind": "arxiv",
    "version": 1
  }
}