Pith Number

pith:X2EJMHMJ

pith:2013:X2EJMHMJZGA56FMBMJVDEK257K

not attested not anchored not stored refs pending

Compact Stirling cooling of astronomical detectors

Gert Raskin, Jeroen Vandersteen, Jesus Perez Padilla, Johan Morren, Wim Pessemier

arxiv:1311.0685 v1 · 2013-11-04 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X2EJMHMJZGA56FMBMJVDEK257K}

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	2026-05-18T03:08:05.144720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be88961d89c981df1581626a322b5dfaba9de816c6982af17fcc9eea3a8b2f0e

Aliases

arxiv: 1311.0685 · arxiv_version: 1311.0685v1 · doi: 10.48550/arxiv.1311.0685 · pith_short_12: X2EJMHMJZGA5 · pith_short_16: X2EJMHMJZGA56FMB · pith_short_8: X2EJMHMJ

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/X2EJMHMJZGA56FMBMJVDEK257K \
  | 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: be88961d89c981df1581626a322b5dfaba9de816c6982af17fcc9eea3a8b2f0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30105a42019b0153a704ad0a923883cfcf452086ba368407d4f19b672fd1cead",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-11-04T13:10:24Z",
    "title_canon_sha256": "31aa97b0bb021d9433bbf05385a05e04728daadbba4d29f821fb4e58125d7f2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0685",
    "kind": "arxiv",
    "version": 1
  }
}