Pith Number

pith:6LT2A5KR

pith:2005:6LT2A5KRHL3N7VLOPEKIOXJNMT

not attested not anchored not stored refs pending

CHANDRA Observations of the X-ray Halo around the Crab Nebula

F. D. Seward, P. Gorenstein, R. K. Smith

arxiv:astro-ph/0509636 v1 · 2005-09-21 · 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{6LT2A5KRHL3N7VLOPEKIOXJNMT}

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	2026-07-04T17:15:12.307528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2e7a075513af6dfd56e7914875d2d64c492c325e716bba3f4401e51e267fd14

Aliases

arxiv: astro-ph/0509636 · arxiv_version: astro-ph/0509636v1 · doi: 10.48550/arxiv.astro-ph/0509636 · pith_short_12: 6LT2A5KRHL3N · pith_short_16: 6LT2A5KRHL3N7VLO · pith_short_8: 6LT2A5KR

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/6LT2A5KRHL3N7VLOPEKIOXJNMT \
  | 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: f2e7a075513af6dfd56e7914875d2d64c492c325e716bba3f4401e51e267fd14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b1194a12f3064e9b9d1c6f23762149f7c72ecd9a309d5d61c3ec4b155247b7b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-21T15:32:37Z",
    "title_canon_sha256": "fda9995794dd00224402ad3759d72fa368be3bd6bfa6b893792191a940ad55a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509636",
    "kind": "arxiv",
    "version": 1
  }
}