Pith Number

pith:SNCR2Y4X

pith:2026:SNCR2Y4XKFJASDZKW24RA5LARH

not attested not anchored not stored refs pending

A Steep-Extinction QSO at z=4.6: JWST Evidence for Abundant Small Dust Grains

Bjorn H. C. Emonts, Fengwu Sun, Ignas Juod\v{z}balis, Mingyu Li, Qiao Duan, Roberto Maiolino, Sandro Tacchella, Xiaohui Fan, Xiaojing Lin, Xihan Ji, Yixiao Liu, Zheng Cai

arxiv:2606.02685 v1 · 2026-06-01 · astro-ph.GA · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SNCR2Y4XKFJASDZKW24RA5LARH}

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	2026-06-03T00:05:06.411274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93451d63975152090f2ab6b910756089dd85bd2e791c31e3abb54c84d3bf9556

Aliases

arxiv: 2606.02685 · arxiv_version: 2606.02685v1 · doi: 10.48550/arxiv.2606.02685 · pith_short_12: SNCR2Y4XKFJA · pith_short_16: SNCR2Y4XKFJASDZK · pith_short_8: SNCR2Y4X

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/SNCR2Y4XKFJASDZKW24RA5LARH \
  | 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: 93451d63975152090f2ab6b910756089dd85bd2e791c31e3abb54c84d3bf9556

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cffa159bf61f3713bd3691375a0d6b978b224b92a08b8c829b84ff7d0da17887",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-01T18:00:00Z",
    "title_canon_sha256": "5d3e0ecdeadbd97f6e6a2f0db4b6e097dc7ce8ff6f46276d198ddaeb3f630210"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.02685",
    "kind": "arxiv",
    "version": 1
  }
}