Pith Number

pith:TNFD2CU6

pith:2011:TNFD2CU6YMJT4KXEKOEGVMTEDH

not attested not anchored not stored refs pending

A Revised Age for Upper Scorpius and The Star-Formation History Among the F-Type Members of the Scorpius-Centaurus OB Association

Eric E. Mamajek, Eric J. Bubar, Mark J. Pecaut

arxiv:1112.1695 v2 · 2011-12-07 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TNFD2CU6YMJT4KXEKOEGVMTEDH}

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	2026-05-18T01:59:15.440692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b4a3d0a9ec3133e2ae453886ab26419eee2aed404abbef791b47cb8a7716590

Aliases

arxiv: 1112.1695 · arxiv_version: 1112.1695v2 · doi: 10.48550/arxiv.1112.1695 · pith_short_12: TNFD2CU6YMJT · pith_short_16: TNFD2CU6YMJT4KXE · pith_short_8: TNFD2CU6

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/TNFD2CU6YMJT4KXEKOEGVMTEDH \
  | 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: 9b4a3d0a9ec3133e2ae453886ab26419eee2aed404abbef791b47cb8a7716590

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a67c900b2cf4be6df155087012d6aaa10b7002906e8b5f3366c511fdee905aa",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-12-07T21:00:02Z",
    "title_canon_sha256": "fa7fd03ad8d754b8e8347a78438e4ae5d671785687382d8a6581d33e288b5f4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1695",
    "kind": "arxiv",
    "version": 2
  }
}