Pith Number

pith:7G7RL6DW

pith:2011:7G7RL6DWBDY7JAJE63SYWGCKTQ

not attested not anchored not stored refs pending

Darker than black: radiation-absorbing metamaterial

E. E. Narimanov, H. Li, M. A. Noginov, T. U. Tumkur, Yu. A. Barnakov

arxiv:1109.5469 v1 · 2011-09-26 · physics.optics · cond-mat.mes-hall

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7G7RL6DWBDY7JAJE63SYWGCKTQ}

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	2026-05-18T04:12:19.724495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9bf15f87608f1f48124f6e58b184a9c21d75f91750ef46ba96d38a6cd7f204e

Aliases

arxiv: 1109.5469 · arxiv_version: 1109.5469v1 · doi: 10.48550/arxiv.1109.5469 · pith_short_12: 7G7RL6DWBDY7 · pith_short_16: 7G7RL6DWBDY7JAJE · pith_short_8: 7G7RL6DW

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/7G7RL6DWBDY7JAJE63SYWGCKTQ \
  | 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: f9bf15f87608f1f48124f6e58b184a9c21d75f91750ef46ba96d38a6cd7f204e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d09a9628224331ac1b0ae25699449aecd2583c279604430812950fe51fd004ce",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2011-09-26T07:53:59Z",
    "title_canon_sha256": "a15b64f4d2444d7d8d4eb127c9b91ff119aa95c9037c6fd584de0c7a0a189988"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5469",
    "kind": "arxiv",
    "version": 1
  }
}