Pith Number

pith:D6YDZEKO

pith:2009:D6YDZEKOCQVSGZSF2FIKV7HB32

not attested not anchored not stored refs pending

The formation and evolution of young low-mass stars within halos with high concentration of dark matter particles

Ilidio Lopes, Jordi Casanellas

arxiv:0909.1971 v2 · 2009-09-10 · astro-ph.CO · 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{D6YDZEKOCQVSGZSF2FIKV7HB32}

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	2026-05-18T02:34:30.552859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fb03c914e142b236645d150aafce1de923e9a4b47115e3e59f39b8dada8ecc6

Aliases

arxiv: 0909.1971 · arxiv_version: 0909.1971v2 · doi: 10.48550/arxiv.0909.1971 · pith_short_12: D6YDZEKOCQVS · pith_short_16: D6YDZEKOCQVSGZSF · pith_short_8: D6YDZEKO

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/D6YDZEKOCQVSGZSF2FIKV7HB32 \
  | 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: 1fb03c914e142b236645d150aafce1de923e9a4b47115e3e59f39b8dada8ecc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "191a304641aae0813494fdd9b367ee4875d77ccc8d288149b9fd4c0aef27f3fc",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-10T15:19:57Z",
    "title_canon_sha256": "25a04eb731d6c9cd0fc471992319a484992d971f77aa9e200f8731932097336f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1971",
    "kind": "arxiv",
    "version": 2
  }
}