Pith Number

pith:42IBYVMU

pith:2017:42IBYVMULV6XSQO4ARZX362F5R

not attested not anchored not stored refs pending

The Kinetically Dominated Quasar 3C~418

Brian Punsly, Preeti Kharb

arxiv:1702.01157 v1 · 2017-02-03 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{42IBYVMULV6XSQO4ARZX362F5R}

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	2026-05-18T00:48:14.895118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6901c55945d7d7941dc04737dfb45ec5a197d3d6bb3390c120d8838efa89cf1

Aliases

arxiv: 1702.01157 · arxiv_version: 1702.01157v1 · doi: 10.48550/arxiv.1702.01157 · pith_short_12: 42IBYVMULV6X · pith_short_16: 42IBYVMULV6XSQO4 · pith_short_8: 42IBYVMU

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/42IBYVMULV6XSQO4ARZX362F5R \
  | 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: e6901c55945d7d7941dc04737dfb45ec5a197d3d6bb3390c120d8838efa89cf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dd55e6e87f8eb35c1ecfa555b7388cbce8ba00ae5f1e932898bdc3c5f8541ba",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-02-03T20:59:50Z",
    "title_canon_sha256": "4b8de9aa08566e76dad9275a7f06531e8a2383b757f094fd3973702fe63bd12c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.01157",
    "kind": "arxiv",
    "version": 1
  }
}