Pith Number

pith:T7P6BFLL

pith:2010:T7P6BFLLUHZNTH4NJ3CQGCQKTX

not attested not anchored not stored refs pending

An Infrared Spatial and Frequency Selective Metamaterial Perfect Absorber

Anthony Starr, Tatiana Starr, Willie J. Padilla, Xianliang Liu

arxiv:1002.1974 v2 · 2010-02-10 · cond-mat.mes-hall · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T7P6BFLLUHZNTH4NJ3CQGCQKTX}

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	2026-05-18T02:09:10.559676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fdfe0956ba1f2d99f8d4ec5030a0a9dc8ffd582129b37d865402be985fbb96e

Aliases

arxiv: 1002.1974 · arxiv_version: 1002.1974v2 · doi: 10.48550/arxiv.1002.1974 · pith_short_12: T7P6BFLLUHZN · pith_short_16: T7P6BFLLUHZNTH4N · pith_short_8: T7P6BFLL

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/T7P6BFLLUHZNTH4NJ3CQGCQKTX \
  | 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: 9fdfe0956ba1f2d99f8d4ec5030a0a9dc8ffd582129b37d865402be985fbb96e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82181399bc3500c4608c7d10cf1c6dcb4bc03a3be6a4d2e69c40ead09285662c",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2010-02-10T20:28:24Z",
    "title_canon_sha256": "26898e855075d8a6409b0d3c6f4a7fc6d471db5f91bd5a60e21b93db5b8ab91b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1974",
    "kind": "arxiv",
    "version": 2
  }
}