Pith Number

pith:NSWI74GG

pith:2012:NSWI74GGEC5BTHFG7UL4NMDS3G

not attested not anchored not stored refs pending

An indirect measurement of gas evolution in galaxies at $0.5\leq z \leq 2.0$

G. Popping, K. I. Caputi, R. S. Somerville, S. C. Trager

arxiv:1201.3826 v1 · 2012-01-18 · astro-ph.CO · 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{NSWI74GGEC5BTHFG7UL4NMDS3G}

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	2026-05-18T01:58:47.282488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cac8ff0c620ba199ca6fd17c6b072d9b75bcefb3965701b97e87a1c0cc94caa

Aliases

arxiv: 1201.3826 · arxiv_version: 1201.3826v1 · doi: 10.48550/arxiv.1201.3826 · pith_short_12: NSWI74GGEC5B · pith_short_16: NSWI74GGEC5BTHFG · pith_short_8: NSWI74GG

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/NSWI74GGEC5BTHFG7UL4NMDS3G \
  | 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: 6cac8ff0c620ba199ca6fd17c6b072d9b75bcefb3965701b97e87a1c0cc94caa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb77fc36a03ddc24fa81c740ed726ece324d127da658c96694bb34b0c2e537a7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-18T15:32:19Z",
    "title_canon_sha256": "28c2587d796ecbfdd7a4d9371870fff438c55d676cd59fcc4ed4cd048190a7c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3826",
    "kind": "arxiv",
    "version": 1
  }
}