Pith Number

pith:2UUMWH6C

pith:2020:2UUMWH6CB5FF3WAPUS5QHCOCSE

not attested not anchored not stored refs pending

The Early Merger that Made the Galaxy's Stellar Halo

Cambridge), N.W. Evans (IoA

arxiv:2002.05740 v1 · 2020-02-13 · astro-ph.GA · 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{2UUMWH6CB5FF3WAPUS5QHCOCSE}

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	2026-07-05T01:04:15.692708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d528cb1fc20f4a5dd80fa4bb0389c2911ad24d087593c79c67db0870fbcfb85d

Aliases

arxiv: 2002.05740 · arxiv_version: 2002.05740v1 · doi: 10.48550/arxiv.2002.05740 · pith_short_12: 2UUMWH6CB5FF · pith_short_16: 2UUMWH6CB5FF3WAP · pith_short_8: 2UUMWH6C

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/2UUMWH6CB5FF3WAPUS5QHCOCSE \
  | 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: d528cb1fc20f4a5dd80fa4bb0389c2911ad24d087593c79c67db0870fbcfb85d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03743c7b9da8eeb87951b83a7c7de110707a8270c7548aeee623424e4ca7028f",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-02-13T19:00:16Z",
    "title_canon_sha256": "621985b7f8e6981de9c60f5494ff9ce092f302760bd52e8040e18a745a72f59c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.05740",
    "kind": "arxiv",
    "version": 1
  }
}