Pith Number

pith:Y3VNTX7Y

pith:2008:Y3VNTX7YPMCJ3J3JAEWPNWSU7B

not attested not anchored not stored refs pending

Time variability of X-ray sources in the M 31 centre field

F. Haberl, H. Stiele, M. Freyberg, W. Pietsch

arxiv:0801.4226 v1 · 2008-01-28 · 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{Y3VNTX7YPMCJ3J3JAEWPNWSU7B}

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.

Cited by

1 paper in Pith

Transient and Variable Ultra-luminous X-ray Sources in NGC 4552

Receipt and verification

First computed	2026-07-04T17:09:01.157566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6ead9dff87b049da769012cf6da54f85f23da359c09446f43f5008d3a992af1

Aliases

arxiv: 0801.4226 · arxiv_version: 0801.4226v1 · doi: 10.48550/arxiv.0801.4226 · pith_short_12: Y3VNTX7YPMCJ · pith_short_16: Y3VNTX7YPMCJ3J3J · pith_short_8: Y3VNTX7Y

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/Y3VNTX7YPMCJ3J3JAEWPNWSU7B \
  | 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: c6ead9dff87b049da769012cf6da54f85f23da359c09446f43f5008d3a992af1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca8e1445f59642508cdae3c1be2ba1117bf42db8aea15a59d14bb295629e528f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-28T10:25:03Z",
    "title_canon_sha256": "a23889329a1c27648d8d8fc83377dc9f77214f1c27e25e48da3f95548140a85e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.4226",
    "kind": "arxiv",
    "version": 1
  }
}