Pith Number

pith:Z2T4VN6Z

pith:2012:Z2T4VN6ZF3SBZXGA5MIA4H5DN4

not attested not anchored not stored refs pending

An Updated Look at Binary Characteristics of Massive Stars in the Cygnus OB2 Association

Daniel C. Kiminki, Henry A. Kobulnicky

arxiv:1203.2156 v1 · 2012-03-09 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z2T4VN6ZF3SBZXGA5MIA4H5DN4}

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	2026-05-18T01:58:10.537873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cea7cab7d92ee41cdcc0eb100e1fa36f28f0f2ff49f51030f7f5212d53941c0b

Aliases

arxiv: 1203.2156 · arxiv_version: 1203.2156v1 · doi: 10.48550/arxiv.1203.2156 · pith_short_12: Z2T4VN6ZF3SB · pith_short_16: Z2T4VN6ZF3SBZXGA · pith_short_8: Z2T4VN6Z

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/Z2T4VN6ZF3SBZXGA5MIA4H5DN4 \
  | 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: cea7cab7d92ee41cdcc0eb100e1fa36f28f0f2ff49f51030f7f5212d53941c0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a72cbb91585f306b774a74586b9ef3befa890083af1b13c38a2be8d0b8207569",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-03-09T18:03:12Z",
    "title_canon_sha256": "7d766884c798dfe18402d711380965be8d48f7f51928a02b7345ab237afd4a2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2156",
    "kind": "arxiv",
    "version": 1
  }
}