Pith Number

pith:6IKLOF4O

pith:2003:6IKLOF4O3SR45VVKM55CYJRXDS

not attested not anchored not stored refs pending

Hints of star fomation at z>6: the chemical abundances of the DLA system in the QSO BRI 1202-0725 (z_abs = 4.383)

Paolo Molaro (INAF-Trieste Observatory), Valentina D'Odorico

arxiv:astro-ph/0310866 v1 · 2003-10-30 · 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{6IKLOF4O3SR45VVKM55CYJRXDS}

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	2026-05-18T02:40:26.877465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f214b7178edca3ced6aa677a2c26371caa43eacbf06c17a0e7c6542e2b60507d

Aliases

arxiv: astro-ph/0310866 · arxiv_version: astro-ph/0310866v1 · doi: 10.48550/arxiv.astro-ph/0310866 · pith_short_12: 6IKLOF4O3SR4 · pith_short_16: 6IKLOF4O3SR45VVK · pith_short_8: 6IKLOF4O

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/6IKLOF4O3SR45VVKM55CYJRXDS \
  | 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: f214b7178edca3ced6aa677a2c26371caa43eacbf06c17a0e7c6542e2b60507d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c907a959ca16ca503de6a244a93b994b82ebeef8bb72ce1cb7ac2f97d4fce22d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-10-30T13:24:40Z",
    "title_canon_sha256": "bdcf9f5d6854a1d8bb86148537f56f61f9ccc2a63c011f2945a0b79c47a287f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0310866",
    "kind": "arxiv",
    "version": 1
  }
}