Pith Number

pith:QCRQAK2C

pith:2008:QCRQAK2C5UFZ3VUA4CY4RQQQXP

not attested not anchored not stored refs pending

Chandra Observation of the Edge-on Spiral NGC 5775: Probing the Hot Galactic Disk/Halo Connection

J. A. Irwin, J. Rossa, J. T. Li, Q. D. Wang, Z. Y. Li

arxiv:0807.3587 v1 · 2008-07-23 · 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{QCRQAK2C5UFZ3VUA4CY4RQQQXP}

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	2026-05-18T02:15:44.662551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80a3002b42ed0b9dd680e0b1c8c210bbe25e807e07497657e42b850e59769c41

Aliases

arxiv: 0807.3587 · arxiv_version: 0807.3587v1 · doi: 10.48550/arxiv.0807.3587 · pith_short_12: QCRQAK2C5UFZ · pith_short_16: QCRQAK2C5UFZ3VUA · pith_short_8: QCRQAK2C

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/QCRQAK2C5UFZ3VUA4CY4RQQQXP \
  | 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: 80a3002b42ed0b9dd680e0b1c8c210bbe25e807e07497657e42b850e59769c41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c306b1f75fe5cf2c1e4466dd88a102d2a279468b2dfd0c7e3eeff7d4925e6fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-23T01:10:18Z",
    "title_canon_sha256": "9302d38daa3a802636c353288873888eceecb844e96bb56f27e5396a90940f1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.3587",
    "kind": "arxiv",
    "version": 1
  }
}