Pith Number

pith:SOWN7U4Y

pith:2017:SOWN7U4YCBBKQMJWM6S3FJXYZP

not attested not anchored not stored refs pending

A Hubble Space Telescope Imaging Study of Four FeLoBAL Quasar Host Galaxies

Daniel Lawther, Marianne Vestergaard, Xiaohui Fan

arxiv:1712.04403 v1 · 2017-12-12 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SOWN7U4YCBBKQMJWM6S3FJXYZP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:22:23.615268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93acdfd3981042a8313667a5b2a6f8cbd3e9abb0f9f333e903709717464190c1

Aliases

arxiv: 1712.04403 · arxiv_version: 1712.04403v1 · doi: 10.48550/arxiv.1712.04403 · pith_short_12: SOWN7U4YCBBK · pith_short_16: SOWN7U4YCBBKQMJW · pith_short_8: SOWN7U4Y

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/SOWN7U4YCBBKQMJWM6S3FJXYZP \
  | 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: 93acdfd3981042a8313667a5b2a6f8cbd3e9abb0f9f333e903709717464190c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "579285dec44efe9f8cb55d94a5a5e3ea712f340a52996d66a0d0ce6048c658d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-12T17:40:19Z",
    "title_canon_sha256": "0577c93e77ccf382dc76486383492c5871d72cf32ca79c974585be8807c1c232"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.04403",
    "kind": "arxiv",
    "version": 1
  }
}