Pith Number

pith:7LVXIMOF

pith:2026:7LVXIMOFFWOQ3CE5D6DKKRYE3E

not attested not anchored not stored refs pending

Reimagining SED Fitting with Cosmological Galaxy Simulations and Machine Learning

Desika Narayanan, Dhruv T. Zimmerman

arxiv:2606.19447 v1 · 2026-06-17 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7LVXIMOFFWOQ3CE5D6DKKRYE3E}

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	2026-06-19T16:12:25.892688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

faeb7431c52d9d0d889d1f86a54704d9020fd999bac12114ede465da216941f1

Aliases

arxiv: 2606.19447 · arxiv_version: 2606.19447v1 · doi: 10.48550/arxiv.2606.19447 · pith_short_12: 7LVXIMOFFWOQ · pith_short_16: 7LVXIMOFFWOQ3CE5 · pith_short_8: 7LVXIMOF

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/7LVXIMOFFWOQ3CE5D6DKKRYE3E \
  | 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: faeb7431c52d9d0d889d1f86a54704d9020fd999bac12114ede465da216941f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "540120a5fe926684a7d6d7344399909d3fde5c7f15a567b6fca1528198151bfd",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-17T18:00:06Z",
    "title_canon_sha256": "4d48e1d21274561b1a7b5abc01a83b6bba8250e82a989b514a82d0e7aee73ebb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.19447",
    "kind": "arxiv",
    "version": 1
  }
}