Pith Number

pith:IF225YHE

pith:2026:IF225YHEBJJTAQLF4ELVQTTBGF

not attested not anchored not stored refs pending

The metallicities of little red dot host galaxies: LRDs are metal poor, but not pristine

A. Sneppen, C.L. Pollock, D. Watson, G. Brammer, G.P. Nikopoulos, J. Witstok, K. E. Heintz

arxiv:2606.31515 v1 · 2026-06-30 · 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{IF225YHEBJJTAQLF4ELVQTTBGF}

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	2026-07-01T01:18:05.605598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4175aee0e40a53304165e117584e613167ee082efc110e7fc9ec3e01bfbee14d

Aliases

arxiv: 2606.31515 · arxiv_version: 2606.31515v1 · doi: 10.48550/arxiv.2606.31515 · pith_short_12: IF225YHEBJJT · pith_short_16: IF225YHEBJJTAQLF · pith_short_8: IF225YHE

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/IF225YHEBJJTAQLF4ELVQTTBGF \
  | 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: 4175aee0e40a53304165e117584e613167ee082efc110e7fc9ec3e01bfbee14d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd518e80b9fae67a744a04c847316840eff8119827f56697e58db4c154c987df",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-30T11:29:36Z",
    "title_canon_sha256": "8fb3a9979f582dfb252695d5761454ad3e2c877e17d3a19671046edf79fb5ec2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.31515",
    "kind": "arxiv",
    "version": 1
  }
}