Pith Number

pith:Z6BYU7XO

pith:2021:Z6BYU7XOLXJB7R56U4UWKVG3Z3

not attested not anchored not stored refs pending

Constraints on the mean free path of ionising photons at $z\sim6$ using limits on individual free paths

Sarah E. I. Bosman

arxiv:2108.12446 v2 · 2021-08-27 · 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{Z6BYU7XOLXJB7R56U4UWKVG3Z3}

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	2026-07-05T03:10:13.936457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf838a7eee5dd21fc7bea7296554dbcedf2f57906edf894c73743524c6dfd5c3

Aliases

arxiv: 2108.12446 · arxiv_version: 2108.12446v2 · doi: 10.48550/arxiv.2108.12446 · pith_short_12: Z6BYU7XOLXJB · pith_short_16: Z6BYU7XOLXJB7R56 · pith_short_8: Z6BYU7XO

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/Z6BYU7XOLXJB7R56U4UWKVG3Z3 \
  | 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: cf838a7eee5dd21fc7bea7296554dbcedf2f57906edf894c73743524c6dfd5c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f45b28bdbebe270eda35e5c6425e1f110053a564bc5e501cceceb2eb4f57a68",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-08-27T18:11:46Z",
    "title_canon_sha256": "f693a8881e1b2dffbcf73e215fb0b97966cb4a2c3b1b9d7bfd4734a2fc333e37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.12446",
    "kind": "arxiv",
    "version": 2
  }
}