Pith Number

pith:IX6FOPSB

pith:2020:IX6FOPSBZZSRBUGF64QBC4T3DQ

not attested not anchored not stored refs pending

Nonreciprocal metamaterial obeying time-reversal symmetry

Alex Song, Georgia T. Papadakis, Shanhui Fan, Siddharth Buddhiraju

arxiv:2002.00341 v1 · 2020-02-02 · 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{IX6FOPSBZZSRBUGF64QBC4T3DQ}

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	2026-07-05T01:15:12.112844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45fc573e41ce6510d0c5f72011727b1c0abec411831d531f0054e1e301cf0463

Aliases

arxiv: 2002.00341 · arxiv_version: 2002.00341v1 · doi: 10.48550/arxiv.2002.00341 · pith_short_12: IX6FOPSBZZSR · pith_short_16: IX6FOPSBZZSRBUGF · pith_short_8: IX6FOPSB

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/IX6FOPSBZZSRBUGF64QBC4T3DQ \
  | 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: 45fc573e41ce6510d0c5f72011727b1c0abec411831d531f0054e1e301cf0463

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a7a238810793568ba278dcedd3d88b8666f28ab7b98aa579a1bfd4721a494b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-02-02T06:46:25Z",
    "title_canon_sha256": "7bfbbcd1c5deb033351cddffbd710cc80f9a619e000594bfae0bf92e88153886"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.00341",
    "kind": "arxiv",
    "version": 1
  }
}