Pith Number

pith:FMASP6HA

pith:2021:FMASP6HASFQNPTAHBNXPTYUETV

not attested not anchored not stored refs pending

Direct Constraints on the Extremely Metal-Poor Massive Stars Underlying Nebular C IV Emission from Ultra-Deep HST/COS Ultraviolet Spectroscopy

Adele Plat, Daniel P. Stark, Gustavo Bruzual, Gwen C. Rudie, Jacopo Chevallard, Peter Senchyna, Ryan L. Sanders, Stephane Charlot, Thomas J. Cooper, Tucker Jones, Zuyi Chen

arxiv:2111.11508 v1 · 2021-11-22 · 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{FMASP6HASFQNPTAHBNXPTYUETV}

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	2026-07-05T04:24:14.318927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b0127f8e09160d7cc070b6ef9e2849d71be6b243408f8f1ddab8ef55ae5599a

Aliases

arxiv: 2111.11508 · arxiv_version: 2111.11508v1 · doi: 10.48550/arxiv.2111.11508 · pith_short_12: FMASP6HASFQN · pith_short_16: FMASP6HASFQNPTAH · pith_short_8: FMASP6HA

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/FMASP6HASFQNPTAHBNXPTYUETV \
  | 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: 2b0127f8e09160d7cc070b6ef9e2849d71be6b243408f8f1ddab8ef55ae5599a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af6f914945a3215fb685f56877473fd6b149bfd245a19f130530b19097a3bfc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-11-22T20:08:13Z",
    "title_canon_sha256": "9d44bd0247249ed0a788a2bae94fce2425c4593d4f15e881a4e07248716dc8d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.11508",
    "kind": "arxiv",
    "version": 1
  }
}