Pith Number

pith:GNAHEHRA

pith:2025:GNAHEHRAQLEOXG6IRNHSP555O5

not attested not anchored not stored refs pending

First broadband optical fibre with an attenuation lower than 0.1 decibel per kilometre

Abubakar Isa Adamu, Athanasios Papadimopoulos, Dong Wu, Eric Numkam Fokoua, Francesco Poletti, Gregory Jasion, Hesham Sakr, Marco Petrovich, Ron Fatobene Ando, Rosdi Hassan, Seyed Reza Sandoghchi, Yong Chen

arxiv:2503.21467 v1 · 2025-03-27 · 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{GNAHEHRAQLEOXG6IRNHSP555O5}

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	2026-07-05T10:40:25.978381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3340721e2082c8eb9bc88b4f27f7bd774c42f140eef297e140a5e26d6580fdd4

Aliases

arxiv: 2503.21467 · arxiv_version: 2503.21467v1 · doi: 10.48550/arxiv.2503.21467 · pith_short_12: GNAHEHRAQLEO · pith_short_16: GNAHEHRAQLEOXG6I · pith_short_8: GNAHEHRA

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/GNAHEHRAQLEOXG6IRNHSP555O5 \
  | 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: 3340721e2082c8eb9bc88b4f27f7bd774c42f140eef297e140a5e26d6580fdd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff32f740ebd54dacc113ab13aae7dae826dac4bee34854bf8adac3d0edd765e1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-03-27T12:56:31Z",
    "title_canon_sha256": "d10fffdeedd3e715cfb2577bd96ef99034bbc3dee4bcf59e34d7f20ffd186818"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.21467",
    "kind": "arxiv",
    "version": 1
  }
}