Pith Number

pith:AAJG2ZSQ

pith:2020:AAJG2ZSQN2YWYIWJQ3II2ZYAE7

not attested not anchored not stored refs pending

A Cold, Massive, Rotating Disk Galaxy 1.5 Billion Years after the Big Bang

J. Xavier Prochaska (UCSC), Marcel Neeleman (MPIA), Marc Rafelski (STScI), Nissim Kanekar (NCRA)

arxiv:2005.09661 v1 · 2020-05-19 · 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{AAJG2ZSQN2YWYIWJQ3II2ZYAE7}

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	2026-07-05T01:04:32.915778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00126d66506eb16c22c986d08d670027f2c0b9be4750740fd84b6b4008056dd0

Aliases

arxiv: 2005.09661 · arxiv_version: 2005.09661v1 · doi: 10.48550/arxiv.2005.09661 · pith_short_12: AAJG2ZSQN2YW · pith_short_16: AAJG2ZSQN2YWYIWJ · pith_short_8: AAJG2ZSQ

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/AAJG2ZSQN2YWYIWJQ3II2ZYAE7 \
  | 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: 00126d66506eb16c22c986d08d670027f2c0b9be4750740fd84b6b4008056dd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25f6f943b811352b360cb2aa92c1237673c728a3041ac74c1fc64996f8d7690e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-05-19T18:00:01Z",
    "title_canon_sha256": "bdf77a76322d71d7b351c780a4c547d7490998258a67f7bbf8a1f0f729207881"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.09661",
    "kind": "arxiv",
    "version": 1
  }
}