Pith Number

pith:MRALKB23

pith:2004:MRALKB23BI2NDJVXVKMGDTQVTH

not attested not anchored not stored refs pending

The Development and Scientific Impact of the Chandra X-Ray Observatory

Daniel A. Schwartz

arxiv:astro-ph/0402275 v1 · 2004-02-12 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MRALKB23BI2NDJVXVKMGDTQVTH}

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	2026-07-04T16:43:01.361389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6440b5075b0a34d1a6b7aa9861ce1599eb93f04e5a2d609a8cb777fe134f0979

Aliases

arxiv: astro-ph/0402275 · arxiv_version: astro-ph/0402275v1 · doi: 10.48550/arxiv.astro-ph/0402275 · pith_short_12: MRALKB23BI2N · pith_short_16: MRALKB23BI2NDJVX · pith_short_8: MRALKB23

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/MRALKB23BI2NDJVXVKMGDTQVTH \
  | 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: 6440b5075b0a34d1a6b7aa9861ce1599eb93f04e5a2d609a8cb777fe134f0979

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80a824d83385fb0da989da7bf566826ac88c6ec841238609c51044c7f358088d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-12T13:46:43Z",
    "title_canon_sha256": "dcf14618d6e3fe2c2bb9866b6c8b78afe4ed48722e7276c9d9662906cf291ce9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402275",
    "kind": "arxiv",
    "version": 1
  }
}