Pith Number

pith:UEI24WHD

pith:2014:UEI24WHDMF6ZPLY5YBN3AA5PPE

not attested not anchored not stored refs pending

Optical frequency transfer via a 660 km underground fiber link using a remote Brillouin amplifier

A. Koczwara, G. Grosche, S. M. F. Raupach

arxiv:1407.4907 v2 · 2014-07-18 · 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{UEI24WHDMF6ZPLY5YBN3AA5PPE}

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	2026-05-18T01:42:34.119780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a111ae58e3617d97af1dc05bb003af7922400f33072bedcd3924516ae247b8c8

Aliases

arxiv: 1407.4907 · arxiv_version: 1407.4907v2 · doi: 10.48550/arxiv.1407.4907 · pith_short_12: UEI24WHDMF6Z · pith_short_16: UEI24WHDMF6ZPLY5 · pith_short_8: UEI24WHD

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/UEI24WHDMF6ZPLY5YBN3AA5PPE \
  | 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: a111ae58e3617d97af1dc05bb003af7922400f33072bedcd3924516ae247b8c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfaaa93b71368af76fc2190534be350df840679f46d1a0819b007a78c024c617",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-07-18T08:16:26Z",
    "title_canon_sha256": "409ee79182cedaf5d13c55a1b54a56387a6c3ef9413d66e091f75e440b8e567a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4907",
    "kind": "arxiv",
    "version": 2
  }
}