Pith Number

pith:SQC5LEEZ

pith:2026:SQC5LEEZCVUW5ZB62Q5JMZTYR4

not attested not anchored not stored refs pending

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

Jon\'as Chaves-Montero

arxiv:2605.22489 v1 · 2026-05-21 · 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{SQC5LEEZCVUW5ZB62Q5JMZTYR4}

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	2026-05-22T01:04:47.268618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9405d5909915696ee43ed43a9666788f0d74a124ed8e9ce98263b554dadc9a72

Aliases

arxiv: 2605.22489 · arxiv_version: 2605.22489v1 · doi: 10.48550/arxiv.2605.22489 · pith_short_12: SQC5LEEZCVUW · pith_short_16: SQC5LEEZCVUW5ZB6 · pith_short_8: SQC5LEEZ

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/SQC5LEEZCVUW5ZB62Q5JMZTYR4 \
  | 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: 9405d5909915696ee43ed43a9666788f0d74a124ed8e9ce98263b554dadc9a72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c63e71f4a80771f9b468f4e480b7d44077ca9c1222abc4feb491e64f63569aac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-05-21T13:43:46Z",
    "title_canon_sha256": "d67362901fab85aeb0c963e3d2604e79ba523b6b2da6d9f6040b01efe412c206"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22489",
    "kind": "arxiv",
    "version": 1
  }
}