Pith Number

pith:NLNVCERA

pith:2018:NLNVCERADX6NDGV53Q4RVTEXRM

not attested not anchored not stored refs pending

Constraints On Duty Cycles Of Quasars At Z $\sim$ 6

Huanqing Chen, Nickolay Y. Gnedin

arxiv:1809.01545 v1 · 2018-09-05 · 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{NLNVCERADX6NDGV53Q4RVTEXRM}

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	2026-05-17T23:59:05.425096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6adb5112201dfcd19abddc391acc978b0b3f72177b7436b2cbdfe684cee67c22

Aliases

arxiv: 1809.01545 · arxiv_version: 1809.01545v1 · doi: 10.48550/arxiv.1809.01545 · pith_short_12: NLNVCERADX6N · pith_short_16: NLNVCERADX6NDGV5 · pith_short_8: NLNVCERA

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/NLNVCERADX6NDGV53Q4RVTEXRM \
  | 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: 6adb5112201dfcd19abddc391acc978b0b3f72177b7436b2cbdfe684cee67c22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4867c249c7a60d5df56d0109e321ca650eafd1b28af6511081b9f9bf0079fd6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-05T14:34:33Z",
    "title_canon_sha256": "87631c862244f1839d49702f6785a24d3d6f075fa2fe46936090e2a7300483bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01545",
    "kind": "arxiv",
    "version": 1
  }
}