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ISCC - Flake-Code#

A unique, time-sorted identifier composed of an 48-bit timestamp and 16 to 208 bit randomness.

The ISCC Flake-Code is a unique identifier for distributed ID generation. The 64-bit version can be used as efficient surrogate key in database systems. It has guaranteed uniqueness if generated from a singele process and is time sortable in integer and base32hex representation. The 128-bit version is a K-sortable, globally unique identifier for use in distributed systems and is compatible with UUID.

Example

>>> import iscc_core as ic
>>> ic.gen_flake_code(bits=64)
{'iscc': 'ISCC:OAAQC7YN7PG2XOR4'}

>>> ic.gen_flake_code(bits=128)
{'iscc': 'ISCC:OABQC7YN7RJGUUTLKDSKBXO25MA5E'}

# Or use the convenience Flake class for easy access to different representations

>>> flake = ic.Flake(bits=64)
>>> flake.iscc
'ISCC:OAAQC7YOADBZYNF7'

>>> flake.time
'2022-02-18T18:03:25.468'

>>> flake.int
107820312524764351

>>> flake.string
'05VGS063JGQBU'

gen_flake_code(bits = 64) #

Create an ISCC Flake-Code with the latest standard algorithm

Parameters:

Name Type Description Default
bits int

Target bit-length of generated Flake-Code

64

Returns:

Type Description
dict

ISCC object with Flake-Code

gen_flake_code_v0(bits = 64) #

Create an ISCC Flake-Code with the latest algorithm v0

Parameters:

Name Type Description Default
bits int

Target bit-length of generated Flake-Code

64

Returns:

Type Description
dict

ISCC object with Flake-Code

uid_flake_v0(ts = None, bits = 64) #

Generate time and randomness based Flake-Hash

Parameters:

Name Type Description Default
ts Optional[float]

Unix timestamp (defaults to current time)

None
bits int

Bit-length resulting Flake-Code (multiple of 32)

64

Returns:

Type Description
bytes

Flake-Hash digest