TrackBinding

One provider's copy of a record, with whatever the station holds of it.

PER BINDING and never per track, which is the rule the whole page is built on: one canonical record may bind to several copies inside one provider, those copies are different files with different loudness and different cue points, and the one that airs is the one that was resolved. Collapsing them would make "clear the audio" ambiguous about which file it took.

The failure columns are here rather than hidden because that is the question this page exists to answer. A row with attempts and no fetchedAt is a remembered failure, and lastError with nextAttemptAt is the whole of why a perfectly good-looking record will not play.

Attributes (15)

Attribute	Type	Required	Description
sourceId	string	Yes	track_sources.id, which is also what the audio URL carries. read-only
pluginId	string	Yes	read-only
externalId	string	Yes	read-only
playable	boolean	Yes	False when the provider still knows the record but will not serve it here. read-only
missingAt	string	No	When the station gave up on this copy. Cleared by the next sync that sees it again. read-only
origin	string	Yes	sync if a playlist walk saw it, discovered if something looked it up. read-only
bitrate	number	No	read-only
format	string	No	read-only
lastSeenAt	string	No	read-only
byteSize	number	No	What the station holds of this copy, absent when nothing has ever fetched it.. read-only
fetchedAt	string	No	read-only
lastServedAt	string	No	read-only
attempts	number	Yes	CONSECUTIVE failures. Reset by a fetch that works. read-only
lastError	string	No	read-only
nextAttemptAt	string	No	read-only