Pith Number

pith:SNKT6KUG

pith:2020:SNKT6KUGJIGLRIPWMJJP47ZZBA

not attested not anchored not stored refs pending

The importance of magnetic fields for the initial mass function of the first stars

Christoph Federrath, Mark R. Krumholz, Piyush Sharda

arxiv:2002.11502 v2 · 2020-02-26 · astro-ph.GA · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SNKT6KUGJIGLRIPWMJJP47ZZBA}

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	2026-07-05T01:16:45.590921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93553f2a864a0cb8a1f66252fe7f39083a2e85039c567d363c44b56fe6967416

Aliases

arxiv: 2002.11502 · arxiv_version: 2002.11502v2 · doi: 10.48550/arxiv.2002.11502 · pith_short_12: SNKT6KUGJIGL · pith_short_16: SNKT6KUGJIGLRIPW · pith_short_8: SNKT6KUG

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/SNKT6KUGJIGLRIPWMJJP47ZZBA \
  | 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: 93553f2a864a0cb8a1f66252fe7f39083a2e85039c567d363c44b56fe6967416

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70d6dc16453c4b1fc91085e64e5c0ea87c7dc6f5b68b527ca310363a074db3c9",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-02-26T14:07:47Z",
    "title_canon_sha256": "d35181fa803c6194203bf86bfc623331bcfa62673f7c7e2732360d936b879d52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.11502",
    "kind": "arxiv",
    "version": 2
  }
}