Pith Number

pith:6PCG4DFC

pith:2009:6PCG4DFCPTGDPEWPQU5NJ6IW6N

not attested not anchored not stored refs pending

Yellow-light Negative-index Metamaterials

Alexander V. Kildishev, Shumin Xiao, Uday K. Chettiar, Vladimir M. Shalaev, Vladimir P. Drachev

arxiv:0907.1870 v1 · 2009-07-10 · 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{6PCG4DFCPTGDPEWPQU5NJ6IW6N}

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	2026-05-18T01:17:21.417807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3c46e0ca27ccc3792cf853ad4f916f35b26b93bd2adb1e3bad4be2950838ce0

Aliases

arxiv: 0907.1870 · arxiv_version: 0907.1870v1 · doi: 10.48550/arxiv.0907.1870 · pith_short_12: 6PCG4DFCPTGD · pith_short_16: 6PCG4DFCPTGDPEWP · pith_short_8: 6PCG4DFC

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/6PCG4DFCPTGDPEWPQU5NJ6IW6N \
  | 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: f3c46e0ca27ccc3792cf853ad4f916f35b26b93bd2adb1e3bad4be2950838ce0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cffec71b95cee0d4f95adfeb9c64acfaf2cbf61eadb363e5165b34efb7ec6f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-07-10T17:06:08Z",
    "title_canon_sha256": "7300227be656eaada251289b696164e192a092dc07a7cab077b2ffc156125bef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1870",
    "kind": "arxiv",
    "version": 1
  }
}