Pith Number

pith:UOZHAQ4P

pith:2015:UOZHAQ4P6C2C5L54EOFY4HBAUW

not attested not anchored not stored refs pending

On the cosmic evolution of the specific star formation rate

(2) GEPI, (3) Departamento de Astronomia, IAG/USP), L. Le Tiran (3), M. D. Lehnert (1), M. Haywood (2) ((1) Institut d'Astrophysique de Paris, Observatoire de Paris, P. Di Matteo (2), W. van Driel (2)

arxiv:1502.02681 v1 · 2015-02-09 · 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{UOZHAQ4P6C2C5L54EOFY4HBAUW}

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	2026-05-18T02:14:16.972424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3b270438ff0b42eafbc238b8e1c20a5b098657bfc87e46e03acd18fb6cc72fb

Aliases

arxiv: 1502.02681 · arxiv_version: 1502.02681v1 · doi: 10.48550/arxiv.1502.02681 · pith_short_12: UOZHAQ4P6C2C · pith_short_16: UOZHAQ4P6C2C5L54 · pith_short_8: UOZHAQ4P

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/UOZHAQ4P6C2C5L54EOFY4HBAUW \
  | 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: a3b270438ff0b42eafbc238b8e1c20a5b098657bfc87e46e03acd18fb6cc72fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "753eebd5d9f7e2a1ef2659a4b4e3e198946910726f513edd322227e9a8132e7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-09T21:05:23Z",
    "title_canon_sha256": "9e22ffbf200459eca04ba0af34ed33e15d190d52f8c72c4d44a90756a4318ad1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02681",
    "kind": "arxiv",
    "version": 1
  }
}