Pith Number

pith:3PJIBWGC

pith:2018:3PJIBWGCEVSYPETBSTVHTMSZAF

not attested not anchored not stored refs pending

Symmetric polarization insensitive directional couplers fabricated by femtosecond laser waveguide writing

Andrea Crespi, Giacomo Corrielli, Ioannis Pitsios, Roberto Osellame, Simone Atzeni, Simone Piacentini

arxiv:1801.03764 v1 · 2018-01-11 · 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{3PJIBWGCEVSYPETBSTVHTMSZAF}

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	2026-05-18T00:11:38.964541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbd280d8c2256587926194ea79b259014cc20a2cf77e87adb4f7c36edbd7e1c1

Aliases

arxiv: 1801.03764 · arxiv_version: 1801.03764v1 · doi: 10.48550/arxiv.1801.03764 · pith_short_12: 3PJIBWGCEVSY · pith_short_16: 3PJIBWGCEVSYPETB · pith_short_8: 3PJIBWGC

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/3PJIBWGCEVSYPETBSTVHTMSZAF \
  | 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: dbd280d8c2256587926194ea79b259014cc20a2cf77e87adb4f7c36edbd7e1c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dab883d689b8ebbd8b03c3c2b167e0cbafdf70541f30d6b1cc7864da2e30c140",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-01-11T14:08:23Z",
    "title_canon_sha256": "7b1b98e4d0614c25be68b5eb459a06076b9d2da2772b1b203a74a0599fc4d18c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03764",
    "kind": "arxiv",
    "version": 1
  }
}