Pith Number

pith:AEN2SAJ4

pith:2019:AEN2SAJ4Q3SPMOBAJI2FNJ3CNM

not attested not anchored not stored refs pending

Amplitude-modulated pulses based phase-sensitive OTDR in distributed sensing

Chengdan Tan, Heng Jiang, Lijun Tang, Qian He, Rong Liu

arxiv:1902.07870 v1 · 2019-02-21 · physics.app-ph · 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{AEN2SAJ4Q3SPMOBAJI2FNJ3CNM}

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	2026-05-17T23:53:03.636107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

011ba9013c86e4f638204a3456a7626b3b58ee675075f2a12bd0168ea957a7e2

Aliases

arxiv: 1902.07870 · arxiv_version: 1902.07870v1 · doi: 10.48550/arxiv.1902.07870 · pith_short_12: AEN2SAJ4Q3SP · pith_short_16: AEN2SAJ4Q3SPMOBA · pith_short_8: AEN2SAJ4

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/AEN2SAJ4Q3SPMOBAJI2FNJ3CNM \
  | 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: 011ba9013c86e4f638204a3456a7626b3b58ee675075f2a12bd0168ea957a7e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e73b5872a2a312cde0da54ff2c474e95a51f490e26995cbc66cf62f511d9e781",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2019-02-21T05:28:43Z",
    "title_canon_sha256": "fdf703ea7c2ed419f8ddb27f3e53ae0b7645d51047cdc9a9859b7fd2b768e2dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07870",
    "kind": "arxiv",
    "version": 1
  }
}