Pith Number

pith:7QNWDYKM

pith:2018:7QNWDYKMRQUMXTFAWFAMOQKFJM

not attested not anchored not stored refs pending

A Model Connecting Galaxy Masses, Star Formation Rates, and Dust Temperatures Across Cosmic Time

Abraham Loeb, Benjamin D. Johnson, Charlie Conroy, Nia Imara, Peter Behroozi

arxiv:1801.01499 v1 · 2018-01-04 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QNWDYKMRQUMXTFAWFAMOQKFJM}

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	2026-05-18T00:22:56.887511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc1b61e14c8c28cbcca0b140c741454b22eb0eb8946f9bc3fc3ef102952ae30f

Aliases

arxiv: 1801.01499 · arxiv_version: 1801.01499v1 · doi: 10.48550/arxiv.1801.01499 · pith_short_12: 7QNWDYKMRQUM · pith_short_16: 7QNWDYKMRQUMXTFA · pith_short_8: 7QNWDYKM

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/7QNWDYKMRQUMXTFAWFAMOQKFJM \
  | 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: fc1b61e14c8c28cbcca0b140c741454b22eb0eb8946f9bc3fc3ef102952ae30f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84d1440c49d2cb4cb8450392e222a2d86e99958d6b2f3bfcd140304b77034454",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-04T19:00:01Z",
    "title_canon_sha256": "142dd48985c1e0ba9ae67aa00fa8d4d53492eee8f484a1f733b6792e9f299693"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01499",
    "kind": "arxiv",
    "version": 1
  }
}