Pith Number

pith:W3HHHYLM

pith:2022:W3HHHYLMNGYHOHFDQOKONY72C7

not attested not anchored not stored refs pending

Accurate Single-Ended Measurement of Propagation Delay in Fiber Using Correlation Optical Time Domain Reflectometry

Annika Dochhan, Florian Azendorf, Michael H. Eiselt

arxiv:2202.10112 v2 · 2022-02-21 · physics.optics · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W3HHHYLMNGYHOHFDQOKONY72C7}

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	2026-07-05T03:59:28.062661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6ce73e16c69b0771ca38394e6e3fa17cfe4e67065a9b5d9524b08f733ab71e2

Aliases

arxiv: 2202.10112 · arxiv_version: 2202.10112v2 · doi: 10.48550/arxiv.2202.10112 · pith_short_12: W3HHHYLMNGYH · pith_short_16: W3HHHYLMNGYHOHFD · pith_short_8: W3HHHYLM

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/W3HHHYLMNGYHOHFDQOKONY72C7 \
  | 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: b6ce73e16c69b0771ca38394e6e3fa17cfe4e67065a9b5d9524b08f733ab71e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5baf632fdf66fafa2397a15cfb440c074bef46373fbf53b2a30533a41675d66",
    "cross_cats_sorted": [
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2022-02-21T10:53:54Z",
    "title_canon_sha256": "1cdbe19088cdacb4471bc78458e5010edf4f39275f313cfd63784aef26e7fb5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.10112",
    "kind": "arxiv",
    "version": 2
  }
}