Pith Number

pith:XGUV25CI

pith:2010:XGUV25CIZDND6PCJMQDPKFBX7P

not attested not anchored not stored refs pending

Evidence for Evolution Among Primordial Disks in the 5 Myr Old Upper Scorpius OB Association

S. E. Dahm

arxiv:1009.2531 v1 · 2010-09-13 · 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{XGUV25CIZDND6PCJMQDPKFBX7P}

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	2026-05-18T02:05:30.951349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9a95d7448c8da3f3c496406f51437fbd2a8d472d0ffddb7e29658874ec757b6

Aliases

arxiv: 1009.2531 · arxiv_version: 1009.2531v1 · doi: 10.48550/arxiv.1009.2531 · pith_short_12: XGUV25CIZDND · pith_short_16: XGUV25CIZDND6PCJ · pith_short_8: XGUV25CI

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/XGUV25CIZDND6PCJMQDPKFBX7P \
  | 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: b9a95d7448c8da3f3c496406f51437fbd2a8d472d0ffddb7e29658874ec757b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27daac1859cc467d4b3018d61e15e8738e302a9978b0f429b7efe1d78e2784eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-09-13T22:11:07Z",
    "title_canon_sha256": "8342a6f6a935b75ae979047cdd52abc5529fb79c045c879fad339e6e09fe3e24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2531",
    "kind": "arxiv",
    "version": 1
  }
}