Pith Number

pith:NQP2RF2I

pith:2015:NQP2RF2IS7OIR2SJ6ILTDTNR4K

not attested not anchored not stored refs pending

On the Impact of Optimal Modulation and FEC Overhead on Future Optical Networks

Alex Alvarado, David J. Ives, Polina Bayvel, Seb Savory

arxiv:1508.04716 v2 · 2015-08-19 · cs.IT · math.IT · 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{NQP2RF2IS7OIR2SJ6ILTDTNR4K}

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	2026-05-18T01:22:48.178929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c1fa8974897dc88ea49f21731cdb1e286ea068ca4c744b4557b25e8ee06d253

Aliases

arxiv: 1508.04716 · arxiv_version: 1508.04716v2 · doi: 10.48550/arxiv.1508.04716 · pith_short_12: NQP2RF2IS7OI · pith_short_16: NQP2RF2IS7OIR2SJ · pith_short_8: NQP2RF2I

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/NQP2RF2IS7OIR2SJ6ILTDTNR4K \
  | 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: 6c1fa8974897dc88ea49f21731cdb1e286ea068ca4c744b4557b25e8ee06d253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da7dc381c14a674692c7bb4b043ebfef80f07288b1fe5b7360b836fad1986640",
    "cross_cats_sorted": [
      "math.IT",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-08-19T17:46:56Z",
    "title_canon_sha256": "9092a7a2cd98a31f5729b8a171d3cb61cdeb22a7d0db4e8a0611305a906e78bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04716",
    "kind": "arxiv",
    "version": 2
  }
}