Pith Number

pith:3XUU7GGF

pith:2024:3XUU7GGFDKY56JGSHQSELWB73L

not attested not anchored not stored refs pending

The Advanced CCD Imaging Spectrometer on the Chandra X-ray Observatory: twenty-five years of on-orbit operation

Catherine E. Grant, Marshall W. Bautz, Paul P. Plucinsky, Peter G. Ford

arxiv:2406.18395 v1 · 2024-06-26 · 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{3XUU7GGFDKY56JGSHQSELWB73L}

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	2026-07-05T08:37:08.702262Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dde94f98c51ab1df24d23c2445d83fdac2f3737eeed9ae76b6fa99f952680e58

Aliases

arxiv: 2406.18395 · arxiv_version: 2406.18395v1 · doi: 10.48550/arxiv.2406.18395 · pith_short_12: 3XUU7GGFDKY5 · pith_short_16: 3XUU7GGFDKY56JGS · pith_short_8: 3XUU7GGF

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/3XUU7GGFDKY56JGSHQSELWB73L \
  | 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: dde94f98c51ab1df24d23c2445d83fdac2f3737eeed9ae76b6fa99f952680e58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f99a0bbf0bda952b13521500d79b95c237bdf9228b4c85ee76514c41beee997",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2024-06-26T14:36:35Z",
    "title_canon_sha256": "c51e1ad56f7017e750a694c981ab7a00753c0ee0104fed016c3b9bae3b9a2091"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2406.18395",
    "kind": "arxiv",
    "version": 1
  }
}