Pith Number

pith:I3TZ2FQU

pith:2012:I3TZ2FQUB6N5NZRMP74KBSORSK

not attested not anchored not stored refs pending

On the sensitivity of generic porous optical sensors

Tom G. Mackay (University of Edinburgh)

arxiv:1202.5028 v1 · 2012-02-22 · 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{I3TZ2FQUB6N5NZRMP74KBSORSK}

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	2026-05-18T01:58:20.605832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46e79d16140f9bd6e62c7ff8a0c9d192bd854fa4666911910e0e9761093102ec

Aliases

arxiv: 1202.5028 · arxiv_version: 1202.5028v1 · doi: 10.48550/arxiv.1202.5028 · pith_short_12: I3TZ2FQUB6N5 · pith_short_16: I3TZ2FQUB6N5NZRM · pith_short_8: I3TZ2FQU

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/I3TZ2FQUB6N5NZRMP74KBSORSK \
  | 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: 46e79d16140f9bd6e62c7ff8a0c9d192bd854fa4666911910e0e9761093102ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44a3427cfa3da1b8f3a638f20531cb4c9cfafeae5ac9f187db43d60ac7a6ed82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-02-22T20:40:33Z",
    "title_canon_sha256": "6347e029dcea67502a53a18ab22fc85f9bab8ed7549f7be7d74d822981563f43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5028",
    "kind": "arxiv",
    "version": 1
  }
}