a_blue_start — Bluesky starter packs (A Blue Start, 2025)

Description

The starter packs of the social network Bluesky, from the dataset "A Blue Start" of Hasegawa Smith, Amburg, Kumar, Foucault Welles and Landry: all starter packs available on Bluesky in late October 2025 (retrieved until November 16, 2025). A starter pack is a list of 6 to 150 users (and feeds) curated by any user, which other users can follow with a single click. The network is bipartite: its nodes are users and starter packs, and an edge connects each starter pack with each user listed in it. The users and starter packs are identified by anonymized ids (non-reversible hashes of their identifiers, DIDs).

The dataset of the authors also contains the follow network of the users (26.7 million users), which is available only from SOMAR/ICPSR with a data use agreement, and is not part of this entry; the starter packs were published openly on Zenodo, in the HIF format for higher-order networks (users as nodes, starter packs as sets).

The network has the following properties:

(Node) is_starter_pack: whether the node is a starter pack (otherwise a user).
(Node) user_id: the anonymized id of the user (-1 for starter packs).
(Node) pack_id: the anonymized id of the starter pack (-1 for users).
(Node) created: the date of creation of the user account or of the starter pack (Unix time).
(Node) active (users): whether the account is active.
(Node) status (users): the status of the account (e.g. normal, deactivated, takendown).
(Node) creator_id (starter packs): the id of the user who created it (-1 if unknown).
(Edge) time: the date on which the user was added to the starter pack (Unix time; -1 if unknown).

Tags

Social Online Affiliation Bipartite Unweighted Timestamps Metadata

Added

2026-10-31

Citation

A. Hasegawa Smith, I. Amburg, S. Kumar, B. Foucault Welles, N. W. Landry, "A Blue Start: A large-scale pairwise and higher-order social network dataset." Scientific Data 13, 585 (2026) 10.1038/s41597-026-06920-1 Sci-Hub

Upstream URL OK

https://doi.org/10.5281/zenodo.19713302
https://doi.org/10.3886/ICPSR300499

Upstream license

Creative Commons Attribution 4.0 International (CC BY 4.0), https://creativecommons.org/licenses/by/4.0/

Networks

Tip: hover over a column header for a description.

Column legend

$\left<k\right>$: Mean degree
$\sigma_k$: Standard deviation of the degrees
$\lambda_h$: Largest eigenvalue of the Hashimoto (non-backtracking) matrix
$\tau$: Random walk mixing time
$r$: Degree assortativity
$c$: Global clustering coefficient
$\oslash$: (Pseudo-) diameter
$S$: Relative size of the largest component
NPs: Node properties
EPs: Edge properties

Name	Nodes	Edges	$\left<k\right>$	$\sigma_k$	$\lambda_h$	$\tau$	$r$	$c$	$\oslash$	$S$	Kind	Mode	NPs	EPs	gt	GraphML	GML	csv
a_blue_start	2,369,378	12,812,086	10.81	165.72	645.98	2991.78	-0.03	0.00	20	1.00	Undirected	Bipartite	is_starter_pack user_id pack_id created active status creator_id	time	46.0 MiB	86.2 MiB	83.5 MiB	91.0 MiB