Pith Number

pith:DS6MM4TL

pith:2010:DS6MM4TLKV6C555TK3PVPHMGTW

not attested not anchored not stored refs pending

Long-Term Spectral Variations of Ultraluminous X-ray Sources in the Interacting Galaxy Systems M51 and NGC4490/85

Ken Ebisawa, Kyoko Matsushita, Masahiro Tsujimoto, Tessei Yoshida, Toshihiro Kawaguchi

arxiv:1008.4187 v1 · 2010-08-25 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DS6MM4TLKV6C555TK3PVPHMGTW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:05:43.034373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cbcc6726b557c2ef7b356df579d869d9e17c0131182e603f60f0bb82e4998b9

Aliases

arxiv: 1008.4187 · arxiv_version: 1008.4187v1 · doi: 10.48550/arxiv.1008.4187 · pith_short_12: DS6MM4TLKV6C · pith_short_16: DS6MM4TLKV6C555T · pith_short_8: DS6MM4TL

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/DS6MM4TLKV6C555TK3PVPHMGTW \
  | 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: 1cbcc6726b557c2ef7b356df579d869d9e17c0131182e603f60f0bb82e4998b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72faea592150c2a98afb714312173fd995e129b3d780ba76dd37a2935683406d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-08-25T02:10:09Z",
    "title_canon_sha256": "0d7df216e1ea06f4282594124446d21314dd02e4b6f7de01aa7ec856738f4fd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4187",
    "kind": "arxiv",
    "version": 1
  }
}