Pith Number

pith:B3NCYTKX

pith:2006:B3NCYTKXGX7XDIFTF4LBT3YCKQ

not attested not anchored not stored refs pending

The O VII X-ray forest toward Markarian 421: Consistency between XMM-Newton and Chandra

A.P. Rasmussen, C.P. de Vries, F.B.S. Paerels, J. de Plaa, J.S. Kaastra, J.W.A. den Herder, N. Werner

arxiv:astro-ph/0604519 v1 · 2006-04-25 · 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{B3NCYTKXGX7XDIFTF4LBT3YCKQ}

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	2026-05-18T04:29:04.819916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0eda2c4d5735ff71a0b32f1619ef02543fdf3d6214765004d0260ee2df34bdfb

Aliases

arxiv: astro-ph/0604519 · arxiv_version: astro-ph/0604519v1 · doi: 10.48550/arxiv.astro-ph/0604519 · pith_short_12: B3NCYTKXGX7X · pith_short_16: B3NCYTKXGX7XDIFT · pith_short_8: B3NCYTKX

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/B3NCYTKXGX7XDIFTF4LBT3YCKQ \
  | 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: 0eda2c4d5735ff71a0b32f1619ef02543fdf3d6214765004d0260ee2df34bdfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8886b612ba8290461294f44344052f368ebe0efe8bea7bd8ed65f52869e23fda",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-04-25T10:31:33Z",
    "title_canon_sha256": "fdbf2dc67dddf9a5bc6af9fd23e3e0539b70ac343318ddff508576cd9796751e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0604519",
    "kind": "arxiv",
    "version": 1
  }
}