Pith Number

pith:DTQLOX2E

pith:2008:DTQLOX2E3PHUUP7SA5CYBUFC5N

not attested not anchored not stored refs pending

The Evolution of Stellar Mass and the Implied Star Formation History

(2) University of Sydney, Andrew M. Hopkins (2)((1) Institute of Astronomy, Australia), Cambridge, Neil Trentham (1), Stephen M. Wilkins (1), UK

arxiv:0801.1594 v1 · 2008-01-10 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DTQLOX2E3PHUUP7SA5CYBUFC5N}

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	2026-07-04T17:08:24.468960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ce0b75f44dbcf4a3ff2074580d0a2eb65ed84b1075e8aaaf2839a981c388d8c

Aliases

arxiv: 0801.1594 · arxiv_version: 0801.1594v1 · doi: 10.48550/arxiv.0801.1594 · pith_short_12: DTQLOX2E3PHU · pith_short_16: DTQLOX2E3PHUUP7S · pith_short_8: DTQLOX2E

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/DTQLOX2E3PHUUP7SA5CYBUFC5N \
  | 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: 1ce0b75f44dbcf4a3ff2074580d0a2eb65ed84b1075e8aaaf2839a981c388d8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9c5b3096080294090717cd53408bf036812f0e112bd8f6bd18c5573b8ed9f90",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-10T13:03:13Z",
    "title_canon_sha256": "3b77b59726845a695e1edd73f80ba2c412aaaff0b19b625865c8a4151fffb88e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.1594",
    "kind": "arxiv",
    "version": 1
  }
}