Pith Number

pith:RXEPJSYS

pith:2021:RXEPJSYSUIRSDCMKDZE7R6XX6D

not attested not anchored not stored refs pending

The Dawn of Disk Formation in a Milky Way-sized Galaxy Halo: Thin Stellar Disks at $z > 4$

Arif Babul, Lucio Mayer, Marius Staub, Pedro R. Capelo, Piero Madau, Sijing Shen, Thomas R. Quinn, Tomas Tamfal

arxiv:2106.11981 v2 · 2021-06-22 · 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{RXEPJSYSUIRSDCMKDZE7R6XX6D}

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	2026-07-05T04:11:46.469540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dc8f4cb12a22321898a1e49f8faf7f0f898e1dce1b6af3d4709d64fd8502549

Aliases

arxiv: 2106.11981 · arxiv_version: 2106.11981v2 · doi: 10.48550/arxiv.2106.11981 · pith_short_12: RXEPJSYSUIRS · pith_short_16: RXEPJSYSUIRSDCMK · pith_short_8: RXEPJSYS

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/RXEPJSYSUIRSDCMKDZE7R6XX6D \
  | 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: 8dc8f4cb12a22321898a1e49f8faf7f0f898e1dce1b6af3d4709d64fd8502549

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4ed73f4d4fbac49840f1f6085c8d4ee6fe945287d7931c723a3495d8cfc8b02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-06-22T18:00:04Z",
    "title_canon_sha256": "49599fcf57b854b9711a79778a345998afd0d89e22b8b0ea9364ea80d9a7e849"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.11981",
    "kind": "arxiv",
    "version": 2
  }
}