Pith Number

pith:5SLDNUHF

pith:2008:5SLDNUHF7CBLG6RUPBU5XOSI7W

not attested not anchored not stored refs pending

The Inevitable Future of the Starless Core Barnard 68

Andreas Burkert (Munich), Joao Alves (Calar Alto Obs.)

arxiv:0809.1457 v1 · 2008-09-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5SLDNUHF7CBLG6RUPBU5XOSI7W}

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	2026-05-18T04:29:32.841443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec9636d0e5f882b37a347869dbba48fdad82d1866a2d8741445ba4125c0f424a

Aliases

arxiv: 0809.1457 · arxiv_version: 0809.1457v1 · doi: 10.48550/arxiv.0809.1457 · pith_short_12: 5SLDNUHF7CBL · pith_short_16: 5SLDNUHF7CBLG6RU · pith_short_8: 5SLDNUHF

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/5SLDNUHF7CBLG6RUPBU5XOSI7W \
  | 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: ec9636d0e5f882b37a347869dbba48fdad82d1866a2d8741445ba4125c0f424a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92ac90d34d0d44c9608fe92c1ac4f4bdc94d1d9d8b33d562d820e00e4d5dd61a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-09T08:34:40Z",
    "title_canon_sha256": "7f7dca4fb7a02a7654231efe4379ae4092f6f15fe6fcd62ba4fe195024d723fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1457",
    "kind": "arxiv",
    "version": 1
  }
}