Pith Number

pith:VPKWABMB

pith:2026:VPKWABMB756A4Z2RFL7UJMAUMB

not attested not anchored not stored refs pending

Tracing the Star Formation History of the Universe through Thermal Free-Free Emission with the SKA

Eric J. Murphy, FangXia An, Hiddo S. B. Algera, Mark Sargent

arxiv:2606.25689 v1 · 2026-06-24 · 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{VPKWABMB756A4Z2RFL7UJMAUMB}

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	2026-06-25T01:18:12.886055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abd5600581ff7c0e67512aff44b0146057df458262912dbd8e5b2bdf1d7aa254

Aliases

arxiv: 2606.25689 · arxiv_version: 2606.25689v1 · doi: 10.48550/arxiv.2606.25689 · pith_short_12: VPKWABMB756A · pith_short_16: VPKWABMB756A4Z2R · pith_short_8: VPKWABMB

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/VPKWABMB756A4Z2RFL7UJMAUMB \
  | 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: abd5600581ff7c0e67512aff44b0146057df458262912dbd8e5b2bdf1d7aa254

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1b6581126d8509d3708b8765b7b97e4c76c1c92b3dd5c8f8bc0c7ede45628a3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-24T10:57:03Z",
    "title_canon_sha256": "fc194335c6c7451e3e8e44e1471b8c81ec2530672b451df9929ac3098a5876db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.25689",
    "kind": "arxiv",
    "version": 1
  }
}