Pith Number

pith:II56LBXM

pith:2018:II56LBXMKSKXQ4ZIVVBMZAPVWO

not attested not anchored not stored refs pending

Revealing the host galaxy of a quasar 2175 \AA$ $ dust absorber at z = 2.12

Britt Lundgren, Gabriel Brammer, Jian Ge, Jingzhe Ma, J. Xavier Prochaska

arxiv:1804.02410 v1 · 2018-04-06 · 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{II56LBXMKSKXQ4ZIVVBMZAPVWO}

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	2026-05-18T00:17:03.474616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

423be586ec5495787328ad42cc81f5b3bef02f8039ffa5087582bd9896e3a008

Aliases

arxiv: 1804.02410 · arxiv_version: 1804.02410v1 · doi: 10.48550/arxiv.1804.02410 · pith_short_12: II56LBXMKSKX · pith_short_16: II56LBXMKSKXQ4ZI · pith_short_8: II56LBXM

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/II56LBXMKSKXQ4ZIVVBMZAPVWO \
  | 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: 423be586ec5495787328ad42cc81f5b3bef02f8039ffa5087582bd9896e3a008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3de7b6eb9f5ac036f6679147c346f13975939822f149ee7126f69f0836aa42cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-06T18:09:53Z",
    "title_canon_sha256": "4b63df94d25d16610700fcefd95167e4fb6610271b71c4559069f4f0a092e23f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02410",
    "kind": "arxiv",
    "version": 1
  }
}