Pith Number

pith:TQ4YK6ML

pith:2018:TQ4YK6MLDJD3AKWBXYAVFEYMER

not attested not anchored not stored refs pending

Quasar Viscosity Crisis

Andy Lawrence

arxiv:1802.00408 v1 · 2018-02-01 · 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{TQ4YK6MLDJD3AKWBXYAVFEYMER}

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	2026-05-18T00:24:35.889369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c3985798b1a47b02ac1be0152930c247f4af449dc01e0ed5974437499e1b747

Aliases

arxiv: 1802.00408 · arxiv_version: 1802.00408v1 · doi: 10.48550/arxiv.1802.00408 · pith_short_12: TQ4YK6MLDJD3 · pith_short_16: TQ4YK6MLDJD3AKWB · pith_short_8: TQ4YK6ML

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/TQ4YK6MLDJD3AKWBXYAVFEYMER \
  | 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: 9c3985798b1a47b02ac1be0152930c247f4af449dc01e0ed5974437499e1b747

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "670260ce149aa6e50e3d81bebc47f7226954e942fc97a2bfd8d0736345eb463a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-02-01T17:33:41Z",
    "title_canon_sha256": "070e2987b9d897bd7979467026bdb7fccb26e1b10653d378f131bef69edeaf89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00408",
    "kind": "arxiv",
    "version": 1
  }
}