Pith Number

pith:QSP7TYDI

pith:2010:QSP7TYDIMGIKVRAP7LS42CNX4U

not attested not anchored not stored refs pending

Orphaned Protostars

Bo Reipurth, Mauri Valtonen, Michael Connelley, Seppo Mikkola

arxiv:1010.3307 v1 · 2010-10-16 · 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{QSP7TYDIMGIKVRAP7LS42CNX4U}

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	2026-05-18T02:05:04.266679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

849ff9e0686190aac40ffae5cd09b7e5271b51d6bdab1edfe3147e570e3e460f

Aliases

arxiv: 1010.3307 · arxiv_version: 1010.3307v1 · doi: 10.48550/arxiv.1010.3307 · pith_short_12: QSP7TYDIMGIK · pith_short_16: QSP7TYDIMGIKVRAP · pith_short_8: QSP7TYDI

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/QSP7TYDIMGIKVRAP7LS42CNX4U \
  | 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: 849ff9e0686190aac40ffae5cd09b7e5271b51d6bdab1edfe3147e570e3e460f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bd801d15f316b811e0b5d9c8e394ae61cd5468087cdeb9a0ae98049d44d09e4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-10-16T02:09:27Z",
    "title_canon_sha256": "881bc3fd8659311a6231abd4658e88318f7869deb60cc7043c007a7388892a8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3307",
    "kind": "arxiv",
    "version": 1
  }
}