Pith Number

pith:E3ZBWRGI

pith:2011:E3ZBWRGIYQYWMGXOUEDAIEYMWP

not attested not anchored not stored refs pending

Understanding Compact Object Formation and Natal Kicks. III. The case of Cygnus X-1

Francesca Valsecchi, Tassos Fragos, Tsing-Wai Wong, Vassiliki Kalogera

arxiv:1107.5585 v2 · 2011-07-27 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E3ZBWRGIYQYWMGXOUEDAIEYMWP}

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	2026-05-18T04:01:13.120353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26f21b44c8c431661aeea10604130cb3cf9a2c88581373f15ddb25f8e90998bc

Aliases

arxiv: 1107.5585 · arxiv_version: 1107.5585v2 · doi: 10.48550/arxiv.1107.5585 · pith_short_12: E3ZBWRGIYQYW · pith_short_16: E3ZBWRGIYQYWMGXO · pith_short_8: E3ZBWRGI

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/E3ZBWRGIYQYWMGXOUEDAIEYMWP \
  | 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: 26f21b44c8c431661aeea10604130cb3cf9a2c88581373f15ddb25f8e90998bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9b51a4327a4a1051d4756bd2a6cf2a4daa5b438ab0adbea0496ba89616fbccf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-07-27T20:09:24Z",
    "title_canon_sha256": "510b3e8b5e9f7f1e1da03f898f5f652c47910dfe93328d32d0d021add4d069ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.5585",
    "kind": "arxiv",
    "version": 2
  }
}