Pith Number

pith:TY2W5VK5

pith:2014:TY2W5VK5FBVVFUIBOAGVD6GP5W

not attested not anchored not stored refs pending

Spatio-TemporalMetasurface for Real-time 2-D Spectrum Analysis

Christophe Caloz, Shulabh Gupta

arxiv:1412.7791 v1 · 2014-12-25 · 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{TY2W5VK5FBVVFUIBOAGVD6GP5W}

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	2026-05-18T02:30:25.143792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e356ed55d286b52d101700d51f8cfed9d4d97b36d63d22a10d7342633e3589d

Aliases

arxiv: 1412.7791 · arxiv_version: 1412.7791v1 · doi: 10.48550/arxiv.1412.7791 · pith_short_12: TY2W5VK5FBVV · pith_short_16: TY2W5VK5FBVVFUIB · pith_short_8: TY2W5VK5

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/TY2W5VK5FBVVFUIBOAGVD6GP5W \
  | 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: 9e356ed55d286b52d101700d51f8cfed9d4d97b36d63d22a10d7342633e3589d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34a3c5c6369ba682784585d57021d79070d1a710565f91851a7487e416039671",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-12-25T06:07:47Z",
    "title_canon_sha256": "d95a8d799f90e26f58fe0247808301a3fe0800b0d619552a44e93847db88ee3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.7791",
    "kind": "arxiv",
    "version": 1
  }
}