Pith Number

pith:D2KDMW7A

pith:2003:D2KDMW7AXEJ3YTIGJ4MYOTLQVC

not attested not anchored not stored refs pending

Constraining the Cosmic Star Formation Rate with the MeV Background

D.H.Hartmann, K.Watanabe, L.-S.The, M.D.Leising

arxiv:astro-ph/0306161 v1 · 2003-06-09 · astro-ph

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

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	2026-05-18T01:40:38.741189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e94365be0b913bc4d064f19874d70a89859d334ed662a9c8de4295d25fe37cb

Aliases

arxiv: astro-ph/0306161 · arxiv_version: astro-ph/0306161v1 · doi: 10.48550/arxiv.astro-ph/0306161 · pith_short_12: D2KDMW7AXEJ3 · pith_short_16: D2KDMW7AXEJ3YTIG · pith_short_8: D2KDMW7A

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/D2KDMW7AXEJ3YTIGJ4MYOTLQVC \
  | 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: 1e94365be0b913bc4d064f19874d70a89859d334ed662a9c8de4295d25fe37cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3213cdcf10e4b532ceb4a342de9b9d3051298ed8b983ddbc7859853c3087c48",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-06-09T11:22:30Z",
    "title_canon_sha256": "25702ef7a65605fa584dc2d87640d4ace271e1d7bad4b152ad5f1fcfc3360941"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0306161",
    "kind": "arxiv",
    "version": 1
  }
}