Pith Number

pith:GVHUKRPM

pith:2012:GVHUKRPMCPC6SJUKDCQYGTIVBX

not attested not anchored not stored refs pending

Optical two-way time and frequency transfer over free space

Esther Baumann, Fabrizio R. Giorgetta, Ian Coddington, Laura C. Sinclair, Nathan R. Newbury, William C. Swann

arxiv:1211.4902 v1 · 2012-11-20 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GVHUKRPMCPC6SJUKDCQYGTIVBX}

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	2026-05-18T01:53:02.190648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

354f4545ec13c5e9268a18a1834d150ded518b3cc1b8dd4688ad963e9f673ef1

Aliases

arxiv: 1211.4902 · arxiv_version: 1211.4902v1 · doi: 10.48550/arxiv.1211.4902 · pith_short_12: GVHUKRPMCPC6 · pith_short_16: GVHUKRPMCPC6SJUK · pith_short_8: GVHUKRPM

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/GVHUKRPMCPC6SJUKDCQYGTIVBX \
  | 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: 354f4545ec13c5e9268a18a1834d150ded518b3cc1b8dd4688ad963e9f673ef1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13eefa0cb39b62d88a4ea1fd07065f34127abda0146d75befaf7f43ecb567b38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-11-20T23:46:16Z",
    "title_canon_sha256": "3a10a84e77b426f8db46cb58466f0c73438a77b8525d952b02085fc09173f339"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4902",
    "kind": "arxiv",
    "version": 1
  }
}