Pith Number

pith:OP6M27WC

pith:2010:OP6M27WC3JICOEU7ITU4ZRALOH

not attested not anchored not stored refs pending

Chemical Signatures of the First Galaxies: Criteria for One-Shot Enrichment

Anna Frebel (MIT), Volker Bromm (UT Austin)

arxiv:1010.1261 v3 · 2010-10-06 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OP6M27WC3JICOEU7ITU4ZRALOH}

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	2026-05-18T02:05:10.355769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73fccd7ec2da5027129f44e9ccc40b71fa0e4a39ac4415691160adc67e0cf15b

Aliases

arxiv: 1010.1261 · arxiv_version: 1010.1261v3 · doi: 10.48550/arxiv.1010.1261 · pith_short_12: OP6M27WC3JIC · pith_short_16: OP6M27WC3JICOEU7 · pith_short_8: OP6M27WC

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/OP6M27WC3JICOEU7ITU4ZRALOH \
  | 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: 73fccd7ec2da5027129f44e9ccc40b71fa0e4a39ac4415691160adc67e0cf15b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebef45dd61fec4dbf7af2efb621328f3d80eda5ab0918cf8854deca07f843d13",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-10-06T20:07:24Z",
    "title_canon_sha256": "106292aac0bda37cf9cfd144d6ecf6b07404f19204e02504a95a17246b03df1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.1261",
    "kind": "arxiv",
    "version": 3
  }
}