Pith Number

pith:XCV7YHP2

pith:2016:XCV7YHP2KFGWZZO7JRBFSGBFUS

not attested not anchored not stored refs pending

No evidence for Population III stars or a Direct Collapse Black Hole in the z = 6.6 Lyman-$\alpha$ emitter 'CR7'

D.J.McLeod, E.R.Stanway, J.J.Eldridge, J.S.Dunlop, M.J.Jarvis, R.A.A.Bowler, R.J.McLure

arxiv:1609.00727 v2 · 2016-09-02 · 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{XCV7YHP2KFGWZZO7JRBFSGBFUS}

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	2026-05-18T00:43:30.496326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8abfc1dfa514d6ce5df4c42591825a4b10df539e0a9802d5a040afe090a2fad

Aliases

arxiv: 1609.00727 · arxiv_version: 1609.00727v2 · doi: 10.48550/arxiv.1609.00727 · pith_short_12: XCV7YHP2KFGW · pith_short_16: XCV7YHP2KFGWZZO7 · pith_short_8: XCV7YHP2

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/XCV7YHP2KFGWZZO7JRBFSGBFUS \
  | 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: b8abfc1dfa514d6ce5df4c42591825a4b10df539e0a9802d5a040afe090a2fad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7add8c141272c64a394b18105865bd94d21a8ba6d7ed72d588539c57b0840249",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-02T20:00:03Z",
    "title_canon_sha256": "b931bec88eca575eb12460f25ecd56dd1c0da21647f915e27009f149a50cbb6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.00727",
    "kind": "arxiv",
    "version": 2
  }
}