Pith Number

pith:HL77WNLF

pith:2021:HL77WNLFD42Y66DINCC635Q67L

not attested not anchored not stored refs pending

The Southern Hemisphere Narrow-Line Seyfert 1 Infrared Survey

Jeremy Mould, Mark Durr\'e

arxiv:2110.03890 v1 · 2021-10-08 · 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{HL77WNLFD42Y66DINCC635Q67L}

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	2026-07-05T03:23:52.795260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3afffb35651f358f78686885edf61efade43fed94915b5bc660a79b84f64aff3

Aliases

arxiv: 2110.03890 · arxiv_version: 2110.03890v1 · doi: 10.48550/arxiv.2110.03890 · pith_short_12: HL77WNLFD42Y · pith_short_16: HL77WNLFD42Y66DI · pith_short_8: HL77WNLF

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/HL77WNLFD42Y66DINCC635Q67L \
  | 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: 3afffb35651f358f78686885edf61efade43fed94915b5bc660a79b84f64aff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a72c16edf49fd03c58f077558b8597cea598003b16ef0cdf5b385718c5a9a7a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-10-08T04:29:31Z",
    "title_canon_sha256": "d44061f2854066e61a0d733a0e1eeecc5bf700386ff7a5e2d2c06a6dcb03be64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.03890",
    "kind": "arxiv",
    "version": 1
  }
}