Pith Number

pith:4U6YLLSP

pith:2013:4U6YLLSPDRYPWXVES2QDZRGY3W

not attested not anchored not stored refs pending

Angular momentum loss of primordial gas in Lyman-alpha radiation field

Hidenobu Yajima, Sadegh Khochfar (University of Edinburgh)

arxiv:1311.1225 v2 · 2013-11-05 · 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{4U6YLLSPDRYPWXVES2QDZRGY3W}

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	2026-05-18T01:46:38.556872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e53d85ae4f1c70fb5ea496a03cc4d8ddb1e3439011a0247ac45152ca0bcf2551

Aliases

arxiv: 1311.1225 · arxiv_version: 1311.1225v2 · doi: 10.48550/arxiv.1311.1225 · pith_short_12: 4U6YLLSPDRYP · pith_short_16: 4U6YLLSPDRYPWXVE · pith_short_8: 4U6YLLSP

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/4U6YLLSPDRYPWXVES2QDZRGY3W \
  | 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: e53d85ae4f1c70fb5ea496a03cc4d8ddb1e3439011a0247ac45152ca0bcf2551

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36b26eb5d4e4d5699edb82131c250b347e2a114d74606a353d12e99e3e88dde7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-05T21:18:35Z",
    "title_canon_sha256": "f9eb24b18f13616a623bc534ad8f3badedeba36a5e459dc1c65c9280f21c588f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1225",
    "kind": "arxiv",
    "version": 2
  }
}