Pith Number

pith:P2QW75EP

pith:2020:P2QW75EPDMU3Y435T6EUKFUGXV

not attested not anchored not stored refs pending

Deep Hubble Space Telescope Imaging on the Extended Ly$\alpha$ Emission of a QSO at $z = 2.19$ with Damped Lyman Alpha System as a Natural Coronagraph

H. Fathivavsari, H.Finley, Jiani Ding, J. Xavier Prochaska, P. Petitjean, Xiaohui Fan, Zheng Cai, Zheng Zheng

arxiv:2002.05179 v1 · 2020-02-12 · 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{P2QW75EPDMU3Y435T6EUKFUGXV}

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	2026-07-05T00:40:28.521475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ea16ff48f1b29bc737d9f89451686bd68ba0ca4300ea8f06f1d1f9e573c0876

Aliases

arxiv: 2002.05179 · arxiv_version: 2002.05179v1 · doi: 10.48550/arxiv.2002.05179 · pith_short_12: P2QW75EPDMU3 · pith_short_16: P2QW75EPDMU3Y435 · pith_short_8: P2QW75EP

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/P2QW75EPDMU3Y435T6EUKFUGXV \
  | 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: 7ea16ff48f1b29bc737d9f89451686bd68ba0ca4300ea8f06f1d1f9e573c0876

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fcd1cc153c115980d0237cd7b0a4a0f7cd50574ade19d83e27e1cea0454b4b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-02-12T19:04:26Z",
    "title_canon_sha256": "5b0dec2e9f1d5173712b0baccb9f1e37c766bc33df2b8c0b35d619e2a619451a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.05179",
    "kind": "arxiv",
    "version": 1
  }
}