Pith Number

pith:Q4CFULNX

pith:2008:Q4CFULNXP5FDJIRAFBMD4PQIZE

not attested not anchored not stored refs pending

High-Resolution X-ray Spectroscopy of SNR 1987A: Chandra LETG and HETG Observations in 2007

Claude R. Canizares, Daniel Dewey, David N. Burrows, Kazimierz J. Borkowski, Richard McCray, Sangwook Park, Svetozar A. Zhekov

arxiv:0810.5313 v1 · 2008-10-29 · 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{Q4CFULNXP5FDJIRAFBMD4PQIZE}

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	2026-05-18T04:29:25.599663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87045a2db77f4a34a22028583e3e08c9214a7adb8bfc1ac70a9693b6141075fe

Aliases

arxiv: 0810.5313 · arxiv_version: 0810.5313v1 · doi: 10.48550/arxiv.0810.5313 · pith_short_12: Q4CFULNXP5FD · pith_short_16: Q4CFULNXP5FDJIRA · pith_short_8: Q4CFULNX

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/Q4CFULNXP5FDJIRAFBMD4PQIZE \
  | 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: 87045a2db77f4a34a22028583e3e08c9214a7adb8bfc1ac70a9693b6141075fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45e8f4f11f7b04e075e4d0629c613bec714d9de913fab055b847dfcf7a4de4ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-29T16:18:31Z",
    "title_canon_sha256": "344ef3bdee28c519b3ca7b69f958f39a48f3dc3fbddd3199f43076d8a037ba1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.5313",
    "kind": "arxiv",
    "version": 1
  }
}