Pith Number

pith:RJQQYKPK

pith:2020:RJQQYKPKKNKGQNGGFIR6DTHUQZ

not attested not anchored not stored refs pending

A universal smartphone add-on for portable spectroscopy and polarimetry: iSPEX 2

Armand B. Perduijn, Christoph U. Keller, Frans Snik, Norbert Schmidt, Olivier Burggraaff, Robert F. van Hek

arxiv:2006.01519 v1 · 2020-06-02 · physics.ins-det · astro-ph.IM · physics.ao-ph · 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{RJQQYKPKKNKGQNGGFIR6DTHUQZ}

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	2026-07-05T01:07:18.238497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a610c29ea53546834c62a23e1ccf4866dc07cc454f4fa6c994eafb61042e94a

Aliases

arxiv: 2006.01519 · arxiv_version: 2006.01519v1 · doi: 10.48550/arxiv.2006.01519 · pith_short_12: RJQQYKPKKNKG · pith_short_16: RJQQYKPKKNKGQNGG · pith_short_8: RJQQYKPK

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/RJQQYKPKKNKGQNGGFIR6DTHUQZ \
  | 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: 8a610c29ea53546834c62a23e1ccf4866dc07cc454f4fa6c994eafb61042e94a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13185d3aa125ef56fccb1b1a8e14b574aaf63075970ce33cdf9f0cdb320e8b1e",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.ao-ph",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2020-06-02T11:00:27Z",
    "title_canon_sha256": "26d9a25e94e6dde942f617ea3d9f6ae4353601715ae1a92badcf40bc4529ab0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.01519",
    "kind": "arxiv",
    "version": 1
  }
}