Pith Number

pith:7DF7Q5NG

pith:2017:7DF7Q5NGSJSPBCBGH4HTSGPKTA

not attested not anchored not stored refs pending

Dust in the first galaxies

Jason Jaacks, Steven L. Finkelstein, Volker Bromm

arxiv:1709.06647 v2 · 2017-09-19 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7DF7Q5NGSJSPBCBGH4HTSGPKTA}

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	2026-05-18T00:25:33.808386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8cbf875a69264f088263f0f3919ea982b404924ca36a9ddf7a88b0328192998

Aliases

arxiv: 1709.06647 · arxiv_version: 1709.06647v2 · doi: 10.48550/arxiv.1709.06647 · pith_short_12: 7DF7Q5NGSJSP · pith_short_16: 7DF7Q5NGSJSPBCBG · pith_short_8: 7DF7Q5NG

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/7DF7Q5NGSJSPBCBGH4HTSGPKTA \
  | 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: f8cbf875a69264f088263f0f3919ea982b404924ca36a9ddf7a88b0328192998

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a5d3ca183ead73d983c7d13994eeabeb354335bc5be74291b5b6fbed739ecec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-19T21:20:51Z",
    "title_canon_sha256": "311fdb255f8b978e29333c159e297d35260cfc1cec93725d29899070eaef4d02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.06647",
    "kind": "arxiv",
    "version": 2
  }
}